Preheat your oven to 350°F (175°C) and grease a large casserole dish.
In a skillet, cook the chicken over medium heat for about 6-7 minutes per side until golden brown and fully cooked. Once done, shred the chicken.
Boil some salted water and cook the spaghetti according to the package instructions until it’s al dente, then drain and set aside.
In a mixing bowl, combine the shredded chicken, cooked spaghetti, cream of chicken soup, chopped bell peppers, paprika, cayenne pepper, garlic powder, and half of the cheddar cheese. Mix well.
Pour the mixture into the prepared casserole dish and sprinkle the remaining cheddar cheese over the top.
Bake for 25-30 minutes, until the cheese is bubbling and golden brown.
Allow it to cool for about 5 minutes before garnishing with sliced green onions. Serve and enjoy!
Notes
For a milder flavor, reduce the cayenne pepper. Use rotisserie chicken to save time.