✓ Preheat your oven to 375°F (190°C).

✓ In a small bowl, combine the garlic powder, onion powder, oregano, salt, and black pepper.

✓ Rub this seasoning blend evenly over both sides of the chicken breasts.

✓ Heat a large skillet over medium-high heat and add a drizzle of olive oil.

✓ Cook the chicken for 5-6 minutes per side, or until fully cooked through and slightly golden.

✓ Remove the chicken from the skillet and set aside.

✓ In the same skillet, add the marinara sauce and simmer for 2-3 minutes to warm through.

✓ Cut each chicken breast into thick slices and arrange them in a greased 9×13-inch baking dish.

✓ Pour the warm marinara sauce over the chicken.

✓ Sprinkle 1 cup of mozzarella cheese evenly over the sauce and chicken.

✓ Add the cooked pasta if using, and distribute it on top.

✓ Sprinkle the remaining 1 cup of mozzarella cheese on top, followed by the grated Parmesan cheese.

✓ Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden brown.

✓ Let the casserole rest for 5-10 minutes before serving.

✓ Garnish with fresh basil if desired.