Spread oil over breasts and season with salt/pepper and italian seasoning to taste.

Heat a skillet over medium heat and add the chicken.

Cook for about 6-10 minutes on each side until fully cooked.

Meanwhile, prepare the topping by mixing the tomatoes and basil together.

When chicken is done, place sliced mozzarella on top of each breast and continue cooking for another minute or two until it has softened.

Remove and top with tomato mixture and a drizzle of pesto.

Serve.