Add olive oil to an oven safe skillet. Season chicken with salt and pepper. Sauté chicken until fully cooked flipping halfway. Takes about 8 minutes.
Add in sliced garlic and sauté for a minute.
Stir in crushed tomatoes, oregano, and red pepper flakes. Bring to a simmer. This takes about 1-2 minutes.
Take off the heat and top with mozzarella and Parmesan cheese.
Place under the broiler for 1-2 minutes or until cheese is melted. Serve immediately!