Nicholas Hoult admittedly knows very little about American football, but one thing's clear -- after he took in the Pittsburgh preseason game over the weekend, he's a big fan of Aaron Rodgers and the Steelers!
The "Superman" actor hit up Acrisure Stadium on Saturday to catch the Black and Yellow's exhibition matchup with the Buccaneers ... and he told TMZ Sports out at LAX on Tuesday the trip was awesome.

He got some one-on-one time with Rodgers just before kickoff -- and he said it was "cool" to bro down with Pitt's new signal-caller.