01 - Bring a large pot of salted water to a boil. Cook tortellini following package directions, adding broccoli florets during the final 2 minutes. Drain both together and set aside.
02 - Season chicken pieces evenly with salt and black pepper.
03 - In a large skillet, heat olive oil over medium-high heat. Add chicken and cook 5–6 minutes, stirring until golden and cooked through. Transfer to a plate.
04 - In the same skillet, melt butter. Add minced garlic and cook for 1 minute until fragrant.
05 - Lower heat to medium. Pour in heavy cream, stirring frequently. Once hot, incorporate Parmesan cheese, mixing until melted and sauce thickens, about 2–3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to the skillet. Toss gently to combine and coat with sauce. Stir in crushed red pepper flakes if desired.
07 - Taste and adjust seasoning with additional salt and pepper as needed. Serve hot, topped with extra Parmesan and fresh parsley if using.