French defender Gusto notched an 8.9 player rating in the victory at Stamford Bridge, which propped the Blues up to fourth place in the table.
The 22-year-old helped get things going for Chelsea in the first half when his daggered pass released Cole Palmer, who netted the opener.
Gusto then turned scorer later in the half when he ghosted into the box and prodded a left-footed attempt into the net.
Chelsea's next travel to League One side Cardiff in the EFL Cup quarter-finals on Tuesday before facing a trip to Newcastle in the Premier League on Saturday.