Preheat oven to 425. Unroll pizza dough on greased jelly-roll pan; pat dough into 12 inch square. Spread mustard over dough within 1/2 inch of edges. Layer ham slices down center, leaving 3 inch border on either side and 1/2 inch border at top and bottom. Top ham with pepperoni. Sprinkle with Italian seasoning and cheese. Fold sides of dough over filling, pinching center seam, top and bottom to seal. Bake 15-20 minutes or until lightly browned. Makes 6 servings.