There’s at least 1 person who isn't convinced Khamzat Chimaev is a killer in the Octagon ... UFC title contender Stephen Thompson.
TMZ Sports talked to 37-year-old Wonderboy -- who was recently floated as a possible opponent for 26-year-old Chimaev -- and Thompson made it crystal clear Khamzat simply doesn't deserve all the praise ... at least not yet.
"There's a lot of hype around [Khamzat] at this point. He's won three fights, he's had one fight at welterweight, he's ranked #15 right now, he's gonna be fighting a guy who ranked higher than me.