In a soup pot over high heat,
bring 4 quarts of water to a boil. Add tortellini and return to a boil.
Add broccoli, reduce heat to medium, and cook 3 to 4 minutes, or until
tortellini are tender; drain and set aside.
In the same pot, heat Alfredo sauce,
chicken, garlic powder, and pepper 5 to 6 minutes, or until hot. Add
tortellini and broccoli to sauce and stir gently; continue heating until
warmed through. Sprinkle with Parmesan cheese just before serving.