Preheat the oven: Set it to 430°F (220°C) and lightly grease a baking dish.
Season the chicken: Place the chicken breasts in the dish. Drizzle with olive oil and rub with Italian seasoning, salt, pepper, and smoked paprika.
2 skinless boneless chicken breasts, 1 tablespoon olive oil, ½ teaspoon salt, 1 pinch black pepper, ½ teaspoon smoked paprika, ½ teaspoon Italian seasoning
Add tomatoes: Scatter halved tomatoes all around the chicken in the dish.
1 cup cherry tomatoes
Mix the sauce: In a small bowl, whisk together balsamic vinegar, brown sugar, and minced garlic.
2 tablespoons balsamic vinegar, ½ tablespoon brown sugar, 2 teaspoons minced garlic
Coat the chicken: Pour the sauce over everything and turn the chicken a bit to coat both sides.
Bake: Bake uncovered for 20–25 minutes, or until the chicken is cooked through (no longer pink in the center).
Add cheese: Sprinkle shredded mozzarella over the top of each piece.
½ cup mozzarella cheese
Broil: Broil for 4–5 minutes until the cheese is golden and bubbly.
Garnish and serve: Sprinkle with chopped parsley or basil, and drizzle with the pan juices.
1 tablespoon fresh parsley chopped