1. Preheat oven to 350. Coat 8 or 9 inch springform pan with vegetable cooking spray. Place 1 tortilla in bottom of pan. Spread tortilla with 3 tablespoons spinach. Top with about 2 tablespoons of each: Feta, Roasted peppers, tomato, French Fried Onion rings and 2 teaspoons of olives.
2. Repeat to make 3 more layers. Place remaining tortilla on top; coat with vegetable cooking spray. Bake 25 minutes or until heated through.
3. Sprinkle with mozzarella cheese and remaining onions; bake 5 minutes or until onions are golden. Cut into wedges to serve.