Bruschetta Chicken

Name: Bruschetta Chicken
Ingredients: 4 cloves garlic, divided; 5 tablespoons olive oil, divided; 3 tablespoons red wine vinegar; 2 tablespoons Italian seasoning; 2 tablespoons kosher salt, divided; 1 1/2 teaspoons freshly ground black pepper, divided; 4 medium boneless, skinless chicken breasts (2 to 2 1/2 pounds total); 12 ounces cherry tomatoes (about 2 1/2 cups); 4 sprigs fresh basil, plus more for garnish; 4 teaspoons balsamic glaze, divided; 6 ounces sliced low-moisture mozzarella cheese (about 8 slices)