Preheat your oven to 375°F (190°C).
In a large pot, bring salted water to a boil. Add the lasagna noodles and cook according to the package instructions until al dente. Drain and set aside.
In a mixing bowl, combine the ricotta cheese, garlic powder, onion powder, salt, and pepper. Mix well until the ingredients are fully incorporated.
In a skillet, heat the olive oil over medium heat. Add the chopped spinach and sauté for about 2-3 minutes until wilted. Remove from heat and let cool slightly.
In your 9x13 inch baking dish, start by spreading a thin layer of Alfredo sauce on the bottom. Place 3 lasagna noodles on top, followed by half of the ricotta mixture, half of the shredded chicken, half of the sautéed spinach, and a third of the mozzarella cheese. Repeat this layering process, finishing with a final layer of noodles topped with the remaining Alfredo sauce and mozzarella cheese. Sprinkle the grated Parmesan cheese evenly on top.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 15 minutes or until the cheese is bubbly and golden.
Once baked, allow the lasagna to cool for about 10 minutes before slicing. Enjoy your Chicken and Spinach Alfredo Lasagna with a side salad or garlic bread for a complete meal!