01 - Preheat oven to 400°F.
02 - In a medium bowl, whisk together balsamic vinegar, olive oil, honey, minced garlic, Italian herbs, Dijon mustard, salt, and pepper until well combined.
03 - Place chicken breasts in a large resealable bag or shallow dish. Pour marinade over chicken, turning to coat thoroughly. Refrigerate for at least 30 minutes for optimal flavor development, or proceed immediately if time-constrained.
04 - Transfer marinated chicken breasts to a baking dish in a single layer. Pour remaining marinade evenly over the top of each piece.
05 - Bake for 20 to 25 minutes until chicken reaches an internal temperature of 165°F and the glaze appears slightly caramelized.
06 - Let chicken rest for 5 minutes before slicing. Garnish with fresh parsley and cherry tomatoes if desired.