01 - Bring a large pot of salted water to a boil. Cook the cheese tortellini according to package instructions, adding the broccoli florets during the last 2 minutes. 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. Sauté seasoned chicken until golden and cooked through, about 5 to 6 minutes. Remove chicken from skillet and set aside.
04 - In the same skillet, melt butter over medium heat. Add minced garlic and cook until fragrant, about 1 minute.
05 - Reduce heat to medium. Pour in heavy cream, stirring to combine. Simmer gently, then add Parmesan cheese. Stir until melted and sauce is creamy and slightly thickened, 2 to 3 minutes.
06 - Add cooked tortellini, broccoli, and chicken to the skillet. Toss to coat evenly in cream sauce. Stir in crushed red pepper flakes, if desired.
07 - Taste and adjust seasoning with additional salt and pepper if needed.
08 - Serve hot, garnished with additional grated Parmesan and chopped fresh parsley if desired.