01 - Bring a large pot of salted water to a boil. Cook tortellini as directed on package, adding broccoli florets for the final 2 minutes. Drain and set aside.
02 - Season chicken pieces evenly with salt and pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Add chicken and cook, stirring occasionally, until golden and cooked through, about 5 to 6 minutes. Transfer chicken to a plate and set aside.
04 - In the same skillet, melt butter. Add minced garlic and sauté for about 1 minute until fragrant.
05 - Reduce heat to medium. Add heavy cream, stirring well. Bring to a gentle simmer, then fold in Parmesan cheese. Stir continuously until cheese melts and sauce thickens, approximately 2 to 3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to the skillet. Toss gently to thoroughly coat in the creamy sauce. Stir in crushed red pepper flakes if desired.
07 - Taste and adjust with additional salt and black pepper as necessary.
08 - Serve hot, garnished with extra Parmesan cheese and fresh chopped parsley if desired.