Cook the lasagna noodles according to package instructions until al dente. Drain and lay them flat on a clean kitchen towel.
In a medium-sized bowl, combine the cooked chicken, ricotta cheese, half of the mozzarella cheese, garlic powder, Italian seasoning, salt, and pepper. Mix until well combined.
Spread a thin layer of Alfredo sauce on the bottom of a 9x13 inch baking dish.
Take a lasagna noodle and spread about 1/4 cup of the chicken and cheese mixture along its length. Roll it up tightly and place it seam-side down in the baking dish. Repeat this process with the remaining noodles and filling.
Once all rolls are placed in the baking dish, pour the remaining Alfredo sauce evenly over the rolls. Sprinkle the remaining mozzarella and all of the Parmesan cheese on top.
Cover the dish with aluminum foil and bake for 25 minutes. Remove the foil and bake for an additional 15 minutes or until the cheese is bubbly and golden.
Once done, allow it to cool for 5 minutes. Garnish with chopped fresh parsley before serving.