Caprese Flatbread with Chicken

Name: Caprese Flatbread with Chicken
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Cuisine: Italian
Ingredients: 2 pieces flatbread or naan; 2 tablespoons prepared pesto; 1 tomato (sliced); 3 ounces ounce cooked boneless skinless chicken breast; 1/2 ounce chopped fresh mozzarella cheese or tiny fresh mozzarella cheese balls; Fresh basil leaves (torn); 2 teaspoons balsamic vinegar (optional)