Eden Hazard sustained a back injury in the Blues' EPL game against Manchester United, and he has missed three games since then.
The Spanish worldwide showed a confidence that has been sorely lacking for the majority of his Chelsea career by deftly controlling Pedro's cross before drilling the ball low past Hennessey.
Morata had plenty of time to decide his best option and he opted to chip Wayne Hennessey, but the Palace goalkeeper stood tall and made a comfortable save.
69- Goal! Game over!
Three thoughts on Chelsea's 3-1 win vs. Somewhat stranded playing wide right, it was a tough day for the Scotsman who was kept honest by Alonso and Pedro down the flank. Alvaro Morata smashes the ball into the bottom corner from the back post!
Palace got an equaliser seven minutes after half-time after Andros Townsend finished off a neatly-worked goal.
Fight Between Passenger And Bus Driver Leads to Crash, 15 Die
The driver took his right arm off the steering wheel and fought back, grabbing the woman's arm when she attacked him again. He then seemed to steer heavily to the left when trying to regain control, sending the bus out of control.
32- Goal! Chelsea takes the lead!
Chelsea went close with a couple of headers, from Morata and Luiz, before Sarri called for his trump card. A win or draw today will mean that Chelsea will be eleven games undefeated in the league.
Sarri will be looking to maintain his unbeaten start when Crystal Palace visit Stamford Bridge on Sunday. Jordan Ayew drops to the bench and is replaced by German playmaker Max Meyer.
However, Sarri has switched back to an unorthodox four-man defence to leave Alonso with less cover at the back and the former Bolton star has been forced to adopt more defensive responsibility this term. Apart from that it's the same side that beat Burnley 4-0 last time out in the league.
Chelsea manager Maurizio Sarri has been delivering some brilliant results at the Stamford Bridge, but he has not been able to use some of his players, the most important of them being Danny Drinkwater and Victor Moses.
It was around this time previous year that Crystal Palace and Chelsea collided.
Palace should welcome Wilfried Zaha back in to the side after he recovered from a minor shoulder problem that kept him out of the League Cup defeat to Middlesbrough.
FW Alvaro Morata, 8 - Seems to have rediscovered his instinctive touch in the penalty area and took his tally to five goals in his last six Chelsea appearances in all competitions. It promises to be a hoot!