Former Eagles loanee Conor Gallagher hit the winner for Chelsea at Selhurst Park, after Odsonne Edouard had put the hosts in front, before Pierre Emerick-Aubameyang's first Blues goal had got them back into the game.
The England defender posted a picture of him getting the better of Zaha during the game and alongside it an emoji of a padlock.
Zaha replied to the post via his Instagram stories.
Adding the message: "Clouts a hell of a drug lol But yall be safe."
However, the Eagles star later deleted the post from his account.