Begin by preheating your oven to 400°F (200°C). This ensures that your chicken will bake evenly and achieve a perfect texture.
In a medium mixing bowl, whisk together the balsamic vinegar, honey, olive oil, minced garlic, dried Italian herbs, and a pinch of salt and pepper. This will be your savory marinade that flavors the chicken beautifully.
Place the chicken breasts in a large baking dish or a sturdy oven-safe skillet. Carefully pour the prepared marinade over the chicken, making sure each breast is thoroughly coated for maximum flavor.
Arrange the halved cherry tomatoes around the chicken in the dish, allowing their juices to meld with the marinade as they cook and add a burst of sweetness.
Transfer the dish to the preheated oven and bake for 20 minutes, letting the chicken absorb the delicious marinade.
After 20 minutes, remove the pan from the oven. Add the fresh spinach around the chicken, ensuring it gets a little steam and wilts nicely. Use a spoon or baster to drizzle some of the pan juices over the chicken to keep it moist during the next phase of cooking.
Place the pan back in the oven and continue baking for an additional 10-15 minutes, or until the chicken has reached a safe internal temperature of 165°F (75°C). The chicken should be juicy and tender when finished.
When done, carefully remove the pan from the oven. Allow the chicken to rest for a few minutes to let the juices redistribute. Before serving, garnish the dish with fresh basil leaves for an aromatic touch.