Creating an Irresistible Spicy Southern Chicken Spaghetti Casserole is simple with these easy-to-follow steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).

2. Cook Spaghetti: In a large pot, bring salted water to a boil. Add spaghetti and cook according to package instructions. Drain and set aside.

3. Sauté Vegetables: In a skillet, heat olive oil over medium heat. Add diced bell peppers, onions, and garlic. Sauté until they are soft, about 5-7 minutes.

4. Combine Ingredients: In a large mixing bowl, combine the shredded chicken, cooked spaghetti, sautéed vegetables, cream of mushroom soup, diced tomatoes with their juice, sour cream, chili powder, paprika, cayenne pepper, salt, and pepper. Mix well until combined.

5. Transfer Dish: Pour the mixture into a greased 9×13-inch casserole dish. Spread it evenly with a spatula.

6. Top with Cheese: Sprinkle the shredded cheddar cheese generously over the top of the casserole.

7. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden brown.

8. Garnish: Once baked, remove from the oven and let it cool for a few minutes. Garnish with fresh parsley if desired.

9. Serve: Scoop out servings and enjoy this amazing dish while it’s warm!

Following these steps will lead you to a deliciously spicy and creamy casserole that will impress everyone at your table.