Preheat the oven to 375°F (190°C).
In a large skillet, heat a drizzle of olive oil over medium heat. Add the minced garlic and sauté until fragrant, about 1 minute.
Add the chopped spinach and cook until wilted. Remove from heat and set aside.
In a mixing bowl, combine the ricotta cheese, cooked chicken, Italian seasoning, salt, and pepper. Mix well.
In a saucepan, heat the heavy cream over medium heat until warm, then stir in 1 cup of mozzarella cheese and half of the Parmesan cheese until melted and smooth.
In the bottom of your baking dish, spread a thin layer of marinara sauce to prevent sticking.
Layer the ingredients as follows: place a layer of gluten-free lasagna noodles, spread half of the ricotta chicken mixture, add half of the garlic spinach mixture, drizzle half of the creamy cheese sauce, add a layer of marinara sauce, and sprinkle with mozzarella cheese.
Repeat the layering process and finish with a final layer of noodles, marinara sauce, the remaining creamy cheese sauce, and the rest of the mozzarella and Parmesan cheese on top.
Cover the dish with foil and bake for 30 minutes. Remove the foil and bake for an additional 15 minutes or until the cheese is bubbly and golden.
Let the lasagna cool for about 10 minutes before slicing and serving.