Cook the pasta in salted boiling water according to package instructions. Add broccoli in the last 2 minutes of cooking. Drain and set aside.
Season and cook the chicken in a skillet with olive oil and butter until golden brown and fully cooked. Remove and slice.
Sauté garlic in the same pan until fragrant, then add cornstarch mixed with milk to thicken the sauce.
Stir in cream cheese, Parmesan, and seasonings (garlic powder, paprika, Italian seasoning, salt, and pepper) until smooth.
Add pasta, broccoli, and chicken back to the skillet, tossing everything together until well coated in the creamy sauce.
Let it simmer for a minute, then remove from heat.
Garnish with extra Parmesan and black pepper before serving.
Serve hot with garlic bread or a fresh salad.