Jake Paul will step into the ring with former middleweight champ Julio Cesar Chavez Jr. in less than a month ... and The Problem Child says he'll beat the former title holder so badly, it'll catapult him to a championship of his own!
28-year-old Paul joined Babcock on the TMZ Sports TV show (airs nightly on FS1) ... where the guys chopped it about the June 28th scrap in SoCal.
"Man, I'm feeling better than ever," Jake said. "This is going to be my breakout performance.