I start by drizzling olive oil over the chicken and rubbing it with garlic powder, basil, oregano, salt, and pepper. Season generously to make sure every bite is flavorful.
Next, I toss the halved tomatoes and diced red onion with balsamic vinegar and brown sugar. Then, I spread them around the chicken so they roast together.
Place the chicken and tomatoes in the oven at a high temperature to seal in juices. Bake for about 20–23 minutes, depending on the thickness of the chicken breasts, until cooked through.
Once the chicken is baked, I sprinkle mozzarella over each piece and switch the oven to broil for 5 minutes. The cheese melts and gets slightly golden and bubbly.
Finally, I drizzle any leftover balsamic juices over the chicken and tomatoes. The dish looks gorgeous and smells irresistible.