Preheat oven to 400 degrees.
In a large skillet add Avocado oil on medium heat.
Add sausage and onion and cook until brown. Drain and use a paper towel to wipe out skillet.
Return cooked sausage and onion mixture to skillet and add pizza sauce salt, pepper, and oregano. Mix well.
Spray 13x9" casserole dish with non-stick spray and add sausage mix.
Dice green pepper and mushrooms and add to casserole dish.
Lay 4 rows of Turkey Pepperoni.
Top with 3 rows of the fresh mozzarella slices.
Bake for 15-20 minutes.
Remove from oven and let sit for 10 minutes to set up.