Step 1

Preheat oven to 400 degrees F. Lightly coat an 8-inch-square baking dish with cooking spray.

Step 2

Bring a large saucepan of water to a boil. Add rotini and cook according to package directions. Drain.

Step 3

Meanwhile, heat 2 tablespoons oil in a large skillet over medium heat. Add onion and cook, stirring, until starting to soften, about 3 minutes. Add tomatoes, garlic powder, basil, oregano, salt and crushed red pepper; bring to a simmer. Cook, stirring, until thickened, about 5 minutes. Stir in chicken and the cooked rotini. Transfer to the prepared baking dish and top with mozzarella.

Step 4

Stir panko, Parmesan, parsley and the remaining 2 tablespoons oil together in a small bowl. Sprinkle over the casserole. Bake until hot and the topping is golden, 25 to 30 minutes.