01 -
Preheat oven to 350°F (175°C). Lightly grease a large casserole dish.
02 -
In a large pot, cook chicken breasts over medium heat for 6–7 minutes per side until golden and fully cooked. Let cool slightly, then shred the chicken.
03 -
Bring a large pot of salted water to a boil. Cook spaghetti for 8–10 minutes until al dente. Drain and set aside.
04 -
In a large bowl, combine shredded chicken, cooked spaghetti, cream of chicken soup, chopped bell peppers, paprika, cayenne pepper, garlic powder, and half of the cheddar cheese. Mix thoroughly until evenly blended.
05 -
Transfer mixture into the prepared casserole dish. Sprinkle the remaining cheddar cheese evenly on top. Bake in the preheated oven for 25–30 minutes, or until the casserole is bubbly and the cheese is golden brown.
06 -
Remove from the oven and let rest for 5 minutes. Garnish with sliced green onions before serving.