1-First, prepare your ingredients by slicing the onion, peaches, and mincing the garlic to set yourself up for success. Heat 2 tablespoons of olive oil in a large skillet over medium-high heat and sauté the sliced onion for about 3 minutes until it softens. Then, push the onion to the side, add the chicken breasts, and season them with salt and pepper to taste before cooking until golden, which takes roughly 2.5 minutes per side.

2-Once the chicken is golden, remove it from the skillet and set it aside. In the same skillet, add the minced garlic and sauté for about 20 seconds until fragrant, then pour in 1/3 cup of balsamic vinegar and let it simmer until it reduces by half, around 1 minute. Stir in 1 tablespoon of honey, followed by the sliced peaches and drained diced tomatoes, and season lightly with a bit more salt and pepper.

3-Return the chicken to the skillet, nestling it among the peaches and tomatoes. Cover the skillet, reduce the heat to medium-low, and cook until the chicken reaches an internal temperature of 165°F (74°C), about 6 to 9 minutes. Finally, top everything with 1/4 cup of thinly sliced fresh basil and serve it warm for a delightful finish.