After Palmer had an effort cleared off the line by Ezri Konsa, Chelsea turned to their own Manchester United loanee in Jadon Sancho in search of a winner but were perhaps fortunate to not concede a penalty when Marc Cucurella took a risk as he appeared to haul Lamare Bogarde to the floor in the area.
Filip Jorgensen went from hero to zero in a matter of seconds as after making a decent stop to deny Donyell Malen, he somehow allowed Asensio’s rather weak effort to squirm underneath his body and into the back of the net.
The winger superbly down the right before picking out his teammate in the middle and Fernandez made no mistake to slot the ball home from close range to mark his third goal in as many appearances against Villa.
The goal, however, was initially ruled out for offside, but was allowed to stand following a VAR review as Rashford was clearly in an onside position when Matty Cash delivered the cross.
Shell-shocked by Chelsea’s fast start, Unai Emery’s side grew into the game as the first-half wore on with Ollie Watkins going close to getting an equaliser.