Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish with a little cooking spray or butter to prevent sticking.
Cook the lasagna noodles according to the package instructions until al dente. Drain and lay them flat on a baking sheet or parchment paper to prevent sticking.
Prepare the chicken mixture by combining the shredded chicken, garlic powder, onion powder, salt, and black pepper in a bowl. Stir well and set aside.
Mix the ricotta filling in another bowl. Combine ricotta cheese, egg, and Italian seasoning. Mix until smooth.
Make the sauce by whisking together Alfredo sauce, milk, and Parmesan cheese in a separate bowl. This will be the creamy base of the lasagna.
Assemble the lasagna:
Spread a thin layer of Alfredo sauce on the bottom of the baking dish.
Lay three lasagna noodles on top.
Spread half of the ricotta mixture over the noodles, followed by half of the shredded chicken.
Sprinkle with 1 cup of mozzarella cheese and drizzle with more Alfredo sauce.
Repeat the layers: noodles, ricotta, chicken, mozzarella, and sauce.
Top with the final layer of noodles, the remaining Alfredo sauce, and the extra mozzarella and Parmesan cheese.
Bake the lasagna by covering the dish with aluminum foil and baking for 25 minutes. Then, remove the foil and bake for another 10-15 minutes until the cheese is bubbly and golden brown.
Let it rest for 10 minutes before slicing. This helps the layers set and makes serving easier.
Garnish with fresh parsley if desired, and serve warm with garlic bread and a side salad!