Jose is justified
The Belgian was simply world-class, keeping the Blues in it on several occasions while it was 0-0. His saves allowed the home side to press on and get the win they looked so desperate to attain.
Already, Courtois could be the best shot stopper in the Premier League, so Jose Mourinho's decision to play him ahead of Petr Cech - no matter how good Cech is or once was - is fully justified.
Second half trumps first
Six points out of six tells a story for Chelsea so far this season - but not the full story. In the first half against Leicester, Mourinho's men looked disjointed and nowhere near as fluent going forward as they were against Burnley.
Whatever the 'Special One' said at half-time, it worked. But it will come as a worry to the Portuguese coach that he would have had to say anything at all.
Costa already making a difference
Chelsea's £32 million signing this summer looks to have fixed a major hole in their side. No longer do they have a Fernando Torres or Demba Ba that can't find the target for love nor money.
Instead, they have Diego Costa, who did very little throughout Saturday's game against the Foxes - but has still scored two goals from just two shots on target this season. How clinical.
Jose must rotate
One thing Mourinho may take from Chelsea's lack of fluency in the first half is that he himself must rotate more. The Blues boast so many options yet the 51-year-old named an unchanged line-up from the side that beat Burnley.
He, largely, made the right calls, though the likes of Ramires, Willian, Marco van Ginkel and more should get more of a look in - and no doubt will as the season progresses.
Hazard can be even better this season
There are not many players that outshone Eden Hazard last term. Okay, the Belgian didn't enjoy the best World Cup. For Chelsea, however, he was electric.
Could he be even better this season? By all means, yes. Especially if his performance against Leicester is anything to go by. Indeed, the 23-year-old was typically brilliant at beating his man but also created numerous chances, played cutting-edge passes and scored a terrific second-half goal to make sure of all the points.
It's a very exciting time to be Eden Hazard.
What did you make of Chelsea's win against Leicester?