Preheat oven to 400 degrees F.
Layout bread and top with ham, salami, and pepperoni.
Top with a couple of slices of provolone cheese.
Bake for a few minutes until the cheese is melted.
In a large bowl, mix together mayo, red wine vinegar, salt, oregano, Italian seasoning, garlic powder, and red pepper flakes.
Stir well.
Add pepperoncinis peppers or banana pepper rings, ⅓ cup Parmesan cheese, ½ sliced red onion, and shredded lettuce.
Stir everything together well.
Once the cheese is melted and the sandwiches are hot, top them with more Parmesan cheese.
Add slices of tomato that have been seasoned with salt and pepper.
Top sandwiches with the grinder salad mixture and enjoy.
