Enzo Fernandez scored the first two goals of his Premier League career as Chelsea beat Brighton 3-2 at Stamford Bridge on Sunday.
Another headed goal, this time from Levi Colwill, doubled Chelsea's lead four minutes later.
Brighton got back into the game courtesy of a fine goal by Facundo Buonanotte just before half-time.
Moments later, Chelsea were reduced to 10 men when Conor Gallagher was shown a second yellow card for a foolish sliding challenge on Billy Gilmour.
Brighton were the better side for much of the second half but Chelsea made it 3-1 in the 65th minute courtesy of a Fernandez penalty.
Fernandez's conversion from 12 yards came after a VAR review had found James Milner guilty of fouling Mykhaylo Mudryk.
Brighton pulled a goal back via Joao Pedro in added time but it was too little too late.
This was Chelsea's first home win in the Premier League since beating Luton in August.
The Blues now sit 10th in the table, three points behind Brighton in eighth.