Move oven rack to middle position and preheat oven to 400 degrees F. Lightly spray a 9-inch pie plate with nonstick cooking spray. Unroll pizza dough and divide into 20 equal sized pieces.
Lay one dough piece flat and slightly stretch it out. Top the dough with a cube of cheese and a piece of pepperoni. Gently pull the edges of the dough around the cheese and pepperoni and pinch closed. Place seam-side down in the prepared pie plate. Repeat with the remaining dough pieces.
Lightly brush the tops of the dough balls with olive oil. Sprinkle with Italian seasoning and bake until the tops are golden brown, about 20 minutes. Sprinkle with Parmesan cheese and serve warm with pizza sauce for dipping!