Preheat oven to 375 degrees.
In a large frying pan heat 1 tablespoon olive oil and sauté onions and peppers until softened and slightly charred. Drain any excess liquid. Place cooked peppers and onions into a 9 x 13 casserole dish sprayed with cooking spray.
Place chicken sausage in with the onions and peppers.
In a large bowl, mix together eggs, seasonings, and parmesan cheese.
Pour egg mixture over top of the sausage, peppers, and onions. Give a couple stirs until all of the ingredients are evenly distributed.
Sprinkle 1 cup shredded mozzarella cheese on top of the egg bake ingredients.
Put in oven and bake for 45 - 50 minutes or until the middle is set.
Cut into 10 squares and serve warm.