Cook the orzo pasta in salted water until al dente, according to package instructions.
In a large skillet, heat olive oil over medium heat and sauté the diced chicken until golden brown.
Add the mushrooms to the skillet and cook until softened, about 5 minutes.
Stir in the minced garlic and cook for an additional minute to release its aroma.
Pour in the chicken broth and heavy cream, stirring to combine. Bring to a simmer.
Add the cooked orzo and spinach. Stir until the spinach wilts and everything is heated through.
Season with salt, pepper, and grated Parmesan cheese; mix until the cheese is melted.
Serve warm, garnished with additional cheese if desired. Enjoy your meal!