01 -
Preheat oven to 350°F (175°C) and grease a large casserole dish.
02 -
Place chicken breasts in a large pot and cook over medium heat for 6–7 minutes per side until golden and fully cooked. Remove and shred the chicken.
03 -
Bring a large pot of salted water to a boil. Cook spaghetti for 8–10 minutes until al dente, then drain and set aside.
04 -
In a large mixing bowl, combine shredded chicken, cooked spaghetti, cream of chicken soup, chopped bell peppers, paprika, cayenne pepper, garlic powder, and half the cheddar cheese. Mix thoroughly.
05 -
Transfer the mixture to the prepared casserole dish. Top evenly with remaining cheddar cheese. Bake for 25–30 minutes until bubbling and golden on top.
06 -
Allow casserole to rest for 5 minutes before sprinkling sliced green onions over the top. Serve warm.