Preheat oven to 425. Unroll pizza dough on greased jelly-roll pan; pat dough into 30 cm square. Spread mustard over dough within 1 cm of edges. Layer ham slices down center, leaving 8 cm border on either side and 1 cm 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.