Heat oven to 375°F. Spray cookie sheet with cooking spray.
Unroll dough sheet; spread pesto over dough to within 1/4 inch of edges. Sprinkle evenly with cheese and pepperoni. Starting with short side, roll up tightly; pinch edges to seal. Cut into 12 slices. Place on cookie sheet.
Bake 16 to 18 minutes or until golden brown. Immediately remove from cookie sheet to cooling rack. Serve warm.