Prepare the ingredients.
Heat olive oil in a large skillet over medium heat.
Add sliced chicken sausage to the skillet, cooking until browned.
Stir in minced garlic and red pepper flakes.
Incorporate the broccoli florets and cook for a few minutes.
Pour in the chicken broth and bring to a boil.
Add the orzo and reduce heat to a simmer.
Simmer until the orzo is cooked and liquid is mostly absorbed.
Stir in grated Parmesan and season with salt and pepper.
Serve warm with additional Parmesan on top, if desired.