Those of you who watched the ESPY's Wednesday night had to have been thinking the same thing..."You notice something different about Jonah Hill?"

That's because the "Superbad" star not only got rid of some excess hair and stubble, home-skillet has dropped some major l.b.s!

Hill tells TMZ he owes his new look to a healthier lifestyle, including working out and dieting, adding, "It's important".