The Ivory Coast international is now the top scorer in the Premier League for the club - of all time.
Zaha managed his 24th goal for the club in England's top division. It is a number that no other Palace player has bettered.
He went ahead of Chris Armstrong, who had 23 goals in the Premier League for the Selhurst Park club.
Zaha got his goal in a 2-1 loss to Watford.