Short answer, yes, a tomato and mozzarella salad can be a healthy choice, as it is made with fresh and nutritious ingredients. Tomatoes are a good source of vitamin C, potassium, and antioxidants, while mozzarella cheese is a good source of protein and calcium. However, it is important to keep portion size and toppings in mind when considering the healthiness of the salad. Adding too much cheese or dressing can increase the calorie and fat content of the salad. Additionally, some tomato and mozzarella salads may be served with bread or other high-carb sides, which can also add to the calorie count. Overall, a tomato and mozzarella salad can be a healthy choice when enjoyed in moderation and with a balanced diet.