01 - In a large pot, add chicken broth, uncooked pasta, diced chicken, mushrooms, garlic powder, salt, and pepper.
02 - Bring the mixture to a boil over medium-high heat. Reduce heat and simmer uncovered, stirring occasionally, until pasta is al dente and most liquid is absorbed, about 12 to 15 minutes.
03 - Lower heat and stir in cream cheese until it melts and the sauce is smooth and well combined.
04 - Add spinach and cook for 1 to 2 minutes, stirring, until the leaves are wilted.
05 - Serve immediately. Top with grated Parmesan cheese or fresh herbs if desired.