01 - Bring a large pot of generously salted water to a boil. Add cheese tortellini and cook according to package directions, adding broccoli florets for the final 2 minutes. Drain thoroughly and set aside.
02 - Season chicken pieces with salt and black pepper on all sides.
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 to a plate and keep warm.
04 - In the same skillet, melt butter over medium heat. Add minced garlic and sauté for 1 minute until aromatic.
05 - Reduce heat to medium. Pour in heavy cream, stirring to incorporate browned bits. Allow mixture to gently simmer, then fold in Parmesan cheese. Stir until cheese is fully melted and sauce thickens, about 2 to 3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to the skillet. Toss all ingredients until evenly coated in the sauce. Stir in crushed red pepper flakes if desired.
07 - Taste and adjust salt and pepper as needed for balance.
08 - Plate pasta warm. Sprinkle with additional Parmesan and fresh parsley if desired. Serve immediately.