Zaha scored the decisive goal on the stroke of half-time at the Britannia Stadium, with Glenn Murray scoring the other from the penalty spot and helping set-up what proved to be the winner.
It was just Murray's fourth start since returning from a loan stint at Reading, and Zaha said the attacking combination of the two goal-scorers and Yannick Bolasie should have come about earlier.
"I don't know why we did not play me, Yannick and Glenn earlier," Zaha said post-match, as reported by The Mirror.
"We know each other inside out and it's working a treat. I'm buzzing, I got a goal again.
"I'm adding goals now. If you're playing well as a winger no-one really talks about it, but scoring is the main thing."
"I'm smiling now, definitely," the match-winner said.
"I do smile when I need to.
"But when it's time to be serious, I'm serious. When it's time to play around, I will play around. I will smile when I need to."
