01 - Bring a large pot of salted water to a boil. Cook tortellini according to package directions, adding broccoli florets during the last 2 minutes. Drain well and set aside.
02 - Generously season chicken pieces with salt and black pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Add chicken and sauté until golden and fully cooked, about 5 to 6 minutes. Remove chicken and set aside.
04 - In the same skillet, melt butter. Add garlic and cook for 1 minute until aromatic.
05 - Reduce heat to medium. Pour in heavy cream, stirring continuously. Bring to a gentle simmer, then add Parmesan cheese. Stir until cheese is melted and sauce is creamy, around 2 to 3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to the skillet. Toss to coat evenly in the sauce. Stir in crushed red pepper flakes if desired.
07 - Taste and adjust seasoning with additional salt and pepper if necessary.
08 - Serve immediately, garnished with extra Parmesan cheese and fresh parsley, if desired.