Zola was applauded by both Fulham and Chelsea fans when he was substituted in the second half. Match delegate Colin Downey, a former FIFA referee, said: "I will mention it in my report as well. Zola was very helpful."
The 35-year-old earned plaudits throughout the game when he scored a wonder goal in January during a 4-0 FA Cup third round replay win against Norwich and then dedicated it to a young fan, Matthew Aston, who died of a brain tumour.
Chelsea's win, sealed by Mikael Forssell's seventh goal from the bench in the past 12 matches, closed the gap on Newcastle, the fourth-placed team, to eight points.