01 - Turn on your oven broiler to prepare for toasting the rolls.
02 - Lay open the rolls on a baking sheet and layer each with provolone and mozzarella cheese slices.
03 - Place under the broiler for 1-2 minutes until cheese melts and bread becomes slightly toasted. Remove from oven.
04 - Arrange salami, ham, mortadella (or turkey), and capicola evenly onto the bottom half of each roll.
05 - In a large mixing bowl, combine lettuce, red onion, pepperoncini, cherry tomatoes, and black olives.
06 - In a small bowl, whisk together mayonnaise, red wine vinegar, olive oil, oregano, garlic powder, salt, and black pepper until smooth.
07 - Pour the dressing over the salad mixture and toss until all vegetables are thoroughly coated.
08 - Pile a generous portion of the dressed salad onto the layered meats on each roll.
09 - Sprinkle with cracked black pepper and grated Parmesan cheese, if desired.
10 - Top with the other half of each roll, press gently to compact, and serve immediately.