Preheat the oven to 400°F (200°C).
Brush the chicken breasts with olive oil and season with salt, pepper, garlic powder, and Italian seasoning.
Grill the chicken over medium-high heat for 5-6 minutes per side until fully cooked.
In a small bowl, mix Parmesan, mozzarella, mayonnaise, lemon juice, and paprika.
Spread the Parmesan mixture evenly over each grilled chicken breast.
Transfer the chicken to a baking dish and bake for 5-7 minutes until the topping is golden and bubbly.
Serve hot with your favorite side dish!