We love a good combo of 2 favorites.. like this one!

½ onion, chopped
1 green bell pepper, chopped
2 cloves garlic, minced
1 tsp Italian seasoning
½ tsp salt
1 tsp pepper
1 (13.8-oz) can refrigerated pizza dough
1 (8-oz) pkg shredded mozzarella cheese
1 (8-oz) bottle Parmesan-peppercorn dressing, divided