01 - Bring a large pot of salted water to a boil. Add tortellini and cook according to package instructions, adding broccoli florets during the last 2 minutes. Drain both together and set aside.
02 - Season chicken pieces liberally with salt and black pepper.
03 - Heat olive oil in a large skillet over medium-high heat. Sauté chicken until golden brown and cooked through, about 5 to 6 minutes. Remove cooked chicken from the pan and keep warm.
04 - In the same skillet, melt butter. Add minced garlic and sauté for about 1 minute until aromatic.
05 - Reduce heat to medium. Pour in heavy cream, stirring to combine. Bring to a gentle simmer. Add Parmesan cheese and stir until fully melted and the sauce thickens, about 2 to 3 minutes.
06 - Return cooked tortellini, broccoli, and chicken to the skillet. Toss thoroughly to coat with sauce. Stir in crushed red pepper flakes if using.
07 - Taste and adjust seasoning with additional salt and black pepper as needed. Serve hot, garnished with extra Parmesan and fresh parsley if desired.