Saquon Barkley is gonna put his big, round, sweaty, naked ... THIGHS ... on his wall -- 'cause the NY Giants star tells TMZ Sports he's framing his ESPN Body Issue pics!!
And ... can ya blame him??
The 6-foot, 233-pound running back showed off his oily, clothesless body for the mag's annual nude edition ... and we gotta say -- he killed it.
As for how he got that jacked body ... Barkley told us at CC Sabathia's charity softball game at Yankee Stadium ... it's sometimes fueled by spicy chicken sandwiches, french fries and strawberry milkshakes.
Dude says he doesn't even consider that a "cheat meal" too!!
Some guys have all the luck ... and biceps.