Preheat oven to 350℉. Spray a 9x13 dish with cooking spray.
Roll one sheet of crescent roll dough into the baking sheet. Press lightly, making sure the dough goes up the sides of the pan (about 1 inch).
Add a layer of cheese on top of the dough (4oz of the cheese slices). Top with pepperoni, ham, then salami. Spread the chopped red peppers and pepperoncini over the meat, then top with the remaining provolone cheese.
Top with the remaining crescent dough, pinching the edges of the dough with the bottom layer.
In a small bowl, mix together olive oil, pesto, and parmesan cheese (you can also use 1 egg in place of the oil).
Spread the oil, pesto, and cheese mixture over the top of the dough. Spray a piece of foil with cooking spray, then place it sprayed side down to cover the dish.
Bake covered for 30 minutes. Remove cover and bake and additional 15-20 minutes until the top is golden brown.
Let cool for 10 minutes. Cut into squares.