Cook bacon in a medium frying pan over medium heat until browned and crisp, about 10 minutes. Transfer to paper towels to drain and sprinkle with rosemary; set aside.
Mix yogurt, cheese, garlic, salt, pepper, and 2 tbsp. water in a medium bowl.
Divide lettuce wedges among 4 plates. Drizzle 3 tbsp. dressing over each portion. Top with avocado, tomatoes, and bacon.
Note: Nutritional analysis is per serving.