01 - Bring a large pot of salted water to a rolling boil. Add the fettuccine and cook until al dente, following package directions. Drain thoroughly using a colander.
02 - Warm the Alfredo sauce in a large skillet over medium heat. Add the diced cooked chicken and fresh spinach. Sauté until the spinach has wilted and the mixture is heated through.
03 - Add the drained fettuccine and grated Parmesan cheese to the skillet. Toss thoroughly until the pasta is evenly coated and the Parmesan is melted.
04 - Portion the creamy chicken Alfredo pasta while hot for best texture and flavor.