Wayne Knight is pictured during a “Seinfeld” fan event at the Donald E. Stephens Convention Center in Rosemont, Illinois, on August 18, 2024. (Barry Brecheisen/WireImage) ...

Wayne Knight, who appeared in 44 episodes of “Seinfeld” as Jerry’s neighbor and nemesis, was the subject of plenty of weight jokes during the series’ run in the 1990s.

Wayne Knight is pictured during a “Seinfeld” fan event at the Donald E. Stephens Convention Center in Rosemont, Ill., on Aug. 18, 2024. (Credit: Barry Brecheisen/WireImage) ...