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 of cooking. Drain and set aside.
02 - Season chicken pieces generously with salt and black pepper.
03 - In a large skillet, heat olive oil over medium-high heat. Add chicken and cook, stirring occasionally, until golden brown and cooked through, about 5 to 6 minutes. Transfer chicken to a plate and set aside.
04 - Add unsalted butter to the same skillet. When melted, 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, then add Parmesan cheese. Stir until melted and the sauce thickens, about 2 to 3 minutes.
06 - Add cooked tortellini, broccoli, and chicken to the skillet. Toss gently to coat all components in the creamy 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 Parmesan and chopped fresh parsley if desired.