On Monday, he faced rival Takeru Kobayashi in a Labor Day hot dog battle.
Chestnut ate 83 hot dogs in 10 minutes -- shattering his previous record of 76.
MORE: Joey Chestnut says he's 'gutted' over Nathan's Hot Dog Eating Contest ban
He last competed against Kobayashi in 2009, in the Nathan's Coney Island Hot Dog Eating Contest held annually on the 4th of July.
But Chestnut didn't compete this year, after he chose to represent another hot dog brand.
Monday's contest was co-hosted by former WWE star Nikki Garcia.
It comes less than a week after her husband, "Dancing With the Stars" pro Artem Chingvintsev, was arrested for felony domestic violence in Napa.