Preheat the oven to 450 degrees F. Grease a lipped cookie sheet with olive oil and set aside.
Thinly slice the onion, mushrooms and olives. Place in a medium bowl with the bell pepper and set aside.
Place the beef, eggs, salt, pepper and Italian seasoning in another medium bowl and mix well by hand until incorporated.
Spread the beef mixture onto the prepared cookies sheet.
Roll or press the meat onto the cookie sheet until flat and spread to the edges.
Place in the oven and cook for 10 minutes or until browned and most of the moisture has cooked off. It will reduce quite a bit, which is fine, just make sure it is browned around the edges and not pink in the middle.
Remove from the oven and pour off any grease from the meat.
Turn on the broiler.
Spread the pizza sauce over the "crust," then top with sausage/ham/pepperoni and onion, bell pepper, mushrooms and olives.
Return the cookie sheet to the oven and watch closely. It will only need to be under the broiler for about 6-8 minutes. Alternatively, you can just leave the oven at 450 for about 10 minutes if you prefer not to use the broiler.
Cook until toppings are slightly browned. Remove from oven. Let cool for three minutes, slice and serve.
This is really good cold as leftovers for lunches. It has a similar texture to pizza with a lot more protein! To make personal pizzas, roll the meat into small (4-5 inch) circles instead of one big crust. If you tolerate dairy, of course, you can add cheese of choice to this recipe.