4 skinless chicken breasts

2 tablespoons olive oil

1/2 teaspoon dried oregano

1/2 teaspoon dried basil

1 teaspoon salt

Cracked black pepper, to taste

1 1/2 tablespoons minced garlic (5–6 cloves)

2 cups grape or cherry tomatoes, halved

1/4 red onion, sliced

1/4 cup balsamic vinegar

1 tablespoon packed brown sugar

3/4 cup fresh mozzarella cheese, shredded

2 tablespoons fresh parsley or basil, chopped (for garnish)