On a very large cutting board spread lettuce (2 cups) in a single layer.
On top of the lettuce, arrange a layer of pepperoni, salami, mortadella, sweet capocollo, and sweet Soppressata (6 slices each).
On top of the meats, arrange a layer of provolone (6 slices), tomatoes 96 slices), pepperoncini peppers (1/4 cup), and red onion (1/4 cup). Chop all ingredients, folding the mixture over onto itself, a few times, with the long knife, until finely dice.
When the mixture is finely diced, sprinkle with olive oil (3 tablespoons), red wine vinegar (3 tablespoons), Italian seasoning (1 tablespoon), salt (1/4 teaspoon), and black pepper (1/4 teaspoon). Place the mayonnaise (1/4 cup) in the center of the pile and fold over onto itself, until the mixture is evenly mixed and everything is well coated with the dressing.
Split the rolls. Scoop out some of the bread to make a well, load with the chopped mixture, and serve.
Notes
Size Matter: Use a large chopping board. When ready to chop the ingredients, use a large knife and make sure you thoroughly slice through the meats. You can flip over the ingredients and continue to chop until everything is evenly chopped. Once the dressing is added, flip again and chop.
Change It Up: Feel free to add or substitute your favorite meats, cheeses, and veggies! Have fun!
Keep It Fresh: Tightly wrap the finished sandwich in plastic and eat it a few hours later. The dressing will moisten the bread and all the ingredients will sing!