Chelsea captain Gary Cahill is restored to the starting line-up after being left out for the midweek Carabao Cup draw against Arsenal.
Midfielder Tiemoue Bakayoko is also recalled, with Danny Drinkwater not in the squad.
The Blues, who will go second with a victory, again leave Willian and Pedro on the bench, meaning Cesc Fabregas plays in a more advanced midfield role.
Chelsea have won seven successive home games in the league keeping five clean sheets along the way.
Leicester have top scorer Jamie Vardy back in the starting line-up, the England striker having missed the past two matches with a groin injury.
But centre-back Wes Morgan and full-back Danny Simpson are out with hamstring injuries.
Chelsea: Courtois; Azpilicueta, Cahill, Rudiger; Moses, Kante, Bakayoko, Fabregas, Alonso; Hazard, Morata.
Subs: Caballero, Zappacosta, Christensen, Luiz, Pedro, Willian, Batshuayi.
Leicester: Schmeichel, Amartey, Dragovic, Maguire, Chilwell, Mahrez, James, Ndidi, Albrighton, Okazaki, Vardy.
Subs: Hamer, Benalouane, Fuchs, Iborra, Gray, Iheanacho, Slimani.