Pre-bake the pie crust about 5 minutes, then sprinkle 1/4 cup dry bread crumbs in the bottom.
Saute the red pepper, zucchini, yellow squash, green onions, and mushrooms in the butter; after sauteing, add the seasoned salt, garlic powder, and red pepper.
Drain the vegetables and spread over the crumbs in the crust.
Top with sliced tomatoes.
Mix the shredded mozzarella cheese with the mayonnaise and spread over the vegetables and tomatoes.