Preheat oven to 350* Spray a 9x13 baking dish w/non stick spray. Set aside 3/4 C of fried crumbled bacon. In a large bowl combine rest of bacon, cream cheese, shredded cheeses, sour cream, mayonnaise, Italian seasoning, garlic powder, mustard and salt & pepper. Spoon mixture into the prepared baking dish. Bake for 25-30 minutes or until hot and bubbly. Sprinkle with chopped tomatoes, remaining 3/4 C bacon & lettuce over the top of the hot mixture. Serve immediately with bread rounds, crackers or pita chips.