In a medium bowl, mix mayonnaise, sour cream, garlic powder, onion powder, salt, and pepper.
Stir in shredded cheddar cheese until well combined.
Spread the mixture evenly into a serving dish.
Top with crumbled bacon, chopped tomatoes, and shredded lettuce.
Cover and refrigerate for at least 30 minutes before serving.
Serve chilled with chips, crackers, or veggie sticks.