Move over, Count Chocula and Cap'n Crunch ... Nick Chubb is coming to the cereal game -- the NFL star is launching a new breakfast treat that's set to benefit an awesome charity!!

The Cleveland Browns running back made the announcement Tuesday ... explaining "Chubb Crunch" is currently in the works with plans to hit grocery store shelves VERY, VERY soon.

Chubb partnered with PLB Sports & Entertainment -- the same people who created Doug Flutie's famous Flutie Flakes -- for the concoction, and Nick's cereal is promising to be amazing.