Preheat the oven to 375°F (190°C).
Cook the lasagna noodles according to package instructions. Drain and set aside.
In a large mixing bowl, combine the cooked chicken, ranch dressing, ricotta cheese, garlic powder, onion powder, dried basil, salt, and black pepper. Mix until well combined.
Spread a thin layer of marinara sauce at the bottom of the 9x13 inch baking dish.
Place 3 lasagna noodles over the sauce, followed by half of the chicken mixture. Top with ⅓ of the mozzarella cheese and sprinkle with ⅓ of the Parmesan cheese.
Repeat the layering process: place another 3 lasagna noodles, the remaining chicken mixture, another ⅓ of mozzarella cheese, and ⅓ of Parmesan cheese.
Top with the last 3 lasagna noodles, remaining marinara sauce, and the rest of the mozzarella and Parmesan cheese.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes.
Remove the foil and bake for an additional 15 minutes, or until the cheese is bubbly and golden.
Allow the lasagna to rest for about 10 minutes before slicing and serving.