Someone in this Interview Gets Punched for a Living
Chuck Liddell seems to be the safe bet in the beginning of the interview, but Brian Kilmeade and Not-Steve-Doocy start to make you wonder. It's definitely not the hairdresser, though.
Assuming Chuck Liddell couldn't make it through some jokes from his friends about being bald is kind of ridiculous. He'd probably just punch them or grow his hair back out—whichever happens first.
[There was a video here]