Preheat oven to 350. Cook bacon, drain, let cool. In a skillet, saute frozen spinach in cooking spray until soft. Add bell pepper, red onion and saute until warm. In a bowl, whisk 8 eggs. Crumble in bacon and sauted vegetables. Mix. Add tomatoes.
Stir in 1 cup of shredded cheese. Spray pie dish with Pam, pour egg mixture evenly in dish. Bake uncovered 350 for 40 minutes. It is done when center is firm. Let sit 5-10 min before serving.