Preheat your oven to 375°F (190°C).
In a skillet, heat a tablespoon of olive oil over medium heat. Add minced garlic and sauté until fragrant, about 1 minute.
Stir in the chopped spinach and artichoke hearts. Cook until the spinach is wilted, approximately 3-4 minutes.
In a mixing bowl, combine the cooked, shredded chicken, wilted spinach and artichoke mixture, ricotta cheese, Italian seasoning, salt, and pepper. Mix thoroughly.
In the bottom of the baking dish, spread 1 cup of marinara sauce evenly.
Place 4 lasagna noodles on top of the sauce. Spread half of the chicken and cheese mixture over the noodles, followed by a layer of 1 cup of marinara sauce, and a sprinkle of mozzarella cheese.
Repeat the layering process with another 4 noodles, the remaining chicken mixture, another cup of marinara sauce, and more mozzarella cheese.
Top the last layer with the final 4 noodles, the remaining marinara sauce, mozzarella cheese, and sprinkle with grated Parmesan cheese.
Cover the baking dish with aluminum foil and bake for 30 minutes.
Remove the foil and bake for an additional 15 minutes until the cheese is bubbly and golden.
Let the lasagna rest for 10 minutes before slicing and serving.