01 - Preheat oven to 400°F. Lightly grease a baking dish large enough to hold chicken breasts in a single layer.
02 - Whisk together balsamic vinegar, olive oil, honey, minced garlic, Italian herbs, salt and pepper in a small bowl until well combined.
03 - Place chicken breasts in prepared baking dish. Pour balsamic marinade over chicken, turning pieces to coat evenly on all sides.
04 - Bake uncovered for 20 minutes to begin cooking chicken through.
05 - Remove dish from oven. Arrange tomato slices and mozzarella cheese over each chicken breast.
06 - Return to oven and bake 8 to 10 minutes longer until chicken reaches internal temperature of 165°F and cheese is melted and bubbly.
07 - For a golden brown top, broil for 2 to 3 minutes while watching closely to prevent burning.
08 - Let chicken rest for 3 minutes before serving. Garnish with fresh basil leaves and drizzle with additional balsamic glaze if desired.