Blues fans won't want to watch that again.
- Kick-off - 15:00 GMT
- Chelsea move two points clear in second spot with victory
- Vardy returns for Leicester
- Get involved: #bbcfootball
Marcos Alonso sends the ball over and Kasper Schmeichel has to claw the ball away for a corner. His biggest test of the afternoon.
Victor Moses then draws a diagonal with his follow-up, but it's horribly wide.
Chelsea have a free-kick.
25 yards out.
Willian and Marcos Alonso over it.
Alvaro Morata goes in the book for bringing down Harry Maguire.
He's been off key - again.
Not on this occasion.
Pedro's drive from 20 yards is harmless.
Wouldn't have hurt a toddler.
Chelsea have a corner.
They won't snatch it will they?
Claude Puel has twisted-ish. Demarai Gray is on for Jamie Vardy.
Chelsea are looking for the kill.
The ball is pinged around the area before it falls to Tiemoue Bakayoko, whose first-time shot flies high over the bar.
Moments later, Bakayoko has another effort from the edge of the area but it's truly woeful.
Christian Fuchs comes on for Shinji Okazaki.
It's defensive mode by Claude Puel.
Neither of Chilwell's tackles were particularly malicious but you could understand why Mike Jones showed two yellows.
Can the Foxes survive the last 20 after a brilliant previous 70.
Ben Chilwell is off after catching Victor Moses late. He receives his second yellow in five minutes!
What an unexpected bonus for the Blues. Bad luck for the Foxes.
It eventually comes to an end with Victor Moses' strike that takes the fast train to the corner flag.
It results in a corner.
Can you call this sustained pressure?
Ben Chilwell goes in the book for bringing down Willian on the right of the Leicester area.
A Chelsea chance?
Antonio Conte's had enough.
Off come Cesc Fabregas and Eden Hazard and on come Willian and Pedro.
Riyad Mahrez is played the ball by Jamie Vardy.
The Algerian magician dances one way and the other but in an effort to beat Andreas Christensen he falls over.
The replay shows the Blues defender had his hands in the air to signal he was not obstructing the Leicester player.
Ref Mike Jones says "no pen".
Moments later, a Mahrez deflected strike wrong-foots Thibaut Courtois although thankfully for the Belgian keeper the ball drifts wide.
Matty James is brought down by N'Golo Kante - Leicester have a free-kick about 45 yards from goal.
Marc Albrighton's clipped ball into the area misses everybody. Bit of a waste
But once again it's the Foxes on top.
The Foxes win a free-kick on the right of the area but Riyad Mahrez's delivery is cleared.
Chelsea try to break quickly but it breaks down.... before they can break.
Poor again from the Blues.
Thibaut Courtois kicks the ball out.
He didn't need to.
We have restarted.
We are about to restart.
Yousuf: Antonio Conte's already set his mind on leaving. His mystifying team selections is all you need to look at.
Jos: Chelsea looking like a pretty poor attacking team. Slow and ponderous.
Naveed: Leicester have absolutely peppered Chelsea in this first half. I can so see Eden Hazard running past three defenders in the 90th min and winning this though. Tiemoue Bakayoko is awful. I think I can pass the ball better and I’m deadly serious.
Chelsea have not been great.
Leicester have been.
It's still 0-0 though.
Former England defender on BBC Radio 5 Live
Chelsea's defence is all over the place, no one is really taking control. It's way too open, which is great for the spectators and the neutrals but if you're Antonio Conte you're going to be quite concerned.
One minute of your stoppage.
Kasper Schmeichel tips over a fierce rising angled drive from Cesc Fabregas.
It was fairly routine to be fair.
Remember the days when this was rarely the case for the Foxes?
Jamie Vardy finds Riyad Mahrez with a great 'left-righter'. The Algerian fizzes a ball across the six-yard area but no Leicester team-mate can get on the end of it.
Remind me, are Chelsea playing at home?
Alvaro Morata presses the RT button and makes his way down the left to the byline. He tries to square the ball, but his 'square' is blocked by Kasper Schmeichel at the near post.
Andreas Christensen has taken his bib off and comes on for Cahill.
Gary Cahill pulls up - looks like it's his hams.
He's getting treatment on the turf.
Eden Hazard just tried to outmuscle Harry Maguire off the ball.
That's not going to happen.
Dare I say it Leicester are playing like the Leicester that won the Premier League - not much dallying on the ball, quick releases, Vardy on the prowl.
Top, top stuff from the men in black.
Riyad 'The Supplier' Mahrez threads another lovely pass on the right to Jamie Vardy who unleashes a first-timer that drifts about a foot wide of Thibaut Courtois' left-hand upright.
Jamie Vardy is found once again with a great through-ball from Riyad Mahrez. However, his shot is blocked at close-range by the alert Gary Cahill.
Seconds later, Mahrez has a first-time shot that beats the defenders but also clears the Thames.
Alvaro Morata, seeking his first goal since Boxing Day, tries to beat two defenders on the edge of the area but has the ball nicked off him.
The loose ball arrives at the feet of Eden Hazard, whose low first-time strike rolls into the hands of Kasper Schmeichel.
Colin: Can't help thinking Danny Drinkwater's Chelsea career is going the same way as Scott Parker's did. Left an established Premier League club chasing the big bucks, only to become a bench warmer.
Femi: What are we gonna get from Alvaro Morata today? He needs to man up against the Foxes - who are going to try and rile him up!
The Foxes should have scored by now - this time Wilfred N'didi's header is pushed away one-handed by Thibaut Courtois. An excellent reaction stop.
Then at the other end, Cesc Fabregas' low angled strike is beaten away by Kasper Schmeichel at the near post.
What a game so far!!!
My word! The Foxes nearly scored, three times!!!
First Jamie Vardy bursts down the left - showing no ill-effects from his recent groin strain - and plays the ball to the over-lapping Ben Chilwell. Shinji Okazaki meets the ball at the near posts but pokes wide.
Moments later, Vardy latches on to a through-ball in the area but his attempted flick finds the side-netting.
And then, Vardy fires wide on the angle after he played Matty James.
There's just been a shot in the stand with Leicester's Danny Drinkwater and Chelsea's new signing Ross Barkley sitting next to each other.
Just thought you'd want to know.