Zucchini Pizza Casserole

Name: Zucchini Pizza Casserole
Cuisine: European, Italian, Mediterranean
Ingredients: 3 medium zucchini (shredded (about 4 cups)); sea salt and ground pepper (to taste); 1/2 cup grated parmesan cheese; 2 large eggs (room temperature); 1 cup freshly shredded mozzarella (divided); 1 tsp oregano; 1 tsp garlic powder; 1 tsp onion powder; 2 cups shredded leftover chicken or turkey; 1/2 cup marinara sauce; a few high-quality pepperoni slices