Preheat oven: Set your oven to 200°C (392°F).
Prepare chicken: Rub chicken breasts with olive oil, minced garlic, oregano, salt, and pepper.
Arrange in baking dish: Place seasoned chicken in the dish.
Top with tomatoes and mozzarella: Add alternating slices of tomato and mozzarella over each piece.
Bake: Cook uncovered for 25 minutes or until the chicken reaches 75°C internally and cheese is melted and bubbly.
Garnish and serve: Drizzle with balsamic glaze and top with fresh basil before serving.