- Boil the spaghetti in a large pot of salted water until al dente. Drain and set aside. 
- Heat olive oil in a large skillet over medium heat. Add the onion and green bell pepper, sautéing until softened, about 5 minutes. 
- In a large bowl, combine the cream of chicken soup, cream of mushroom soup, chicken broth, garlic powder, salt, pepper, and paprika. Stir until smooth. 
- Add the cooked chicken, sautéed vegetables, and cooked spaghetti to the sauce mixture. Mix well to coat evenly. 
- Preheat the oven to 350°F (175°C). Transfer the mixture to a 9x13-inch baking dish and spread evenly. Sprinkle shredded cheddar cheese over the top. 
- Bake in the preheated oven for 20 minutes or until the cheese is melted and bubbly. 
- Remove from the oven and let rest for 5 minutes before serving. Enjoy!