Gather all ingredients on a large cutting board.

Finely chop the shredded lettuce, red onion, tomato, and pepperoncini into small, bite-sized pieces.

Chop the salami, capicola, prosciutto, and provolone cheese into small cubes.

Transfer all the chopped ingredients and meats into a large mixing bowl.

In another bowl, whisk together mayonnaise, extra-virgin olive oil, red wine vinegar, dried oregano, salt, and pepper.

Pour the dressing over the chopped mixture and stir well.

Spoon the mixture into small sub rolls or your choice of bread.