Preheat the oven to 375 degrees F. Line the bottom of a sheet pan with parchment paper.
Flatten each roll into a 6-inch round. Onto each flattened roll, add a half slice of provolone, 1 tablespoon of marinara sauce, a meatball and, finally, a slice of the deli peppers.
Fold opposite sides of each roll up and over the meatball, pinching them together. Continue folding and pinching the sides together until the meatball and filling are completely encased in the dough. Place seam-side down onto the prepared sheet pan.
Mix together the olive oil, Parmesan and red pepper flakes in a small bowl. Brush the top of each roll with the mixture. Bake until golden and crisp, 16 to 18 minutes. Serve with warm marinara on the side.