Preheat oven to 350°. In a small bowl, mix pepperoni, pasta sauce and mozzarella cheese., On a lightly floured surface, divide dough into four portions. Roll each into a 6-in. circle; top each with a scant 1/3 cup pepperoni mixture. Fold dough over filling; pinch edges to seal. Place on a greased baking sheet. , Brush milk over tops; sprinkle with Parmesan cheese and, if desired, Italian seasoning. Bake until golden brown, 20-25 minutes.