Preheat oven to 350°F (175°C).
Cook spaghetti according to package instructions; drain and set aside.
In a large bowl, mix shredded chicken, Rotel, soups, 1 cup cheese, chicken broth, garlic powder, salt, and pepper.
Add cooked spaghetti to the mixture and combine well.
Pour the mixture into a greased baking dish.
Top with the remaining 1 cup of cheese.
Bake for 25-30 minutes or until bubbly and golden on top.
Serve warm and enjoy!