01 - Bring a large pot of salted water to a boil. Cook tortellini according to package directions; add broccoli florets during the last 2 minutes of cooking. Drain and set aside.
02 - Season chicken pieces with salt and black pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Add chicken and cook until golden and cooked through, 5–6 minutes. Remove chicken from the skillet and set aside.
04 - In the same skillet, melt butter. Add minced garlic and sauté for 1 minute until fragrant.
05 - Reduce heat to medium. Pour in heavy cream, stirring to combine. Bring to a gentle simmer and add Parmesan cheese. Stir until cheese has melted and sauce has thickened, about 2–3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to skillet. Toss to coat in the cream sauce. Stir in crushed red pepper flakes if desired.
07 - Taste and adjust seasoning with additional salt and pepper as needed.
08 - Serve hot, garnished with extra grated Parmesan and chopped parsley if desired.