The Hornets were ready to play the fixture at Ashton Gate, which was initially delayed due to torrential rain before a pitch inspection at 3.10pm deemed the waterlogged surface unplayable.
Due to the late nature of the postponement, Zola had already submitted his starting line-up which showed one enforced change from the side that disposed of Nottingham Forest last Saturday.
Ikechi Anya came in for suspended defender Marco Cassetti, whose one-match ban for accumulating five yellow cards will now see him sit out against Brighton at the Amex Stadium.
Although Zola, who likes to tinker with his XI, could opt to mix things up and keep the Seagulls guessing ahead of the late kick-off time.
Striker Fernando Forestieri (hamstring) and defender Lloyd Doyley (calf) continue to be monitored, while fit-again pair John Eustace and Nyron Nosworthy lack match practice.