Preheat your oven to 375°F (190°C).
Cook the lasagna noodles according to package instructions until al dente. Drain and set aside.
In a large skillet, heat the marinara sauce over medium heat. Stir in the shredded chicken and allow to simmer for about 5 minutes. Season with salt, pepper, and Italian seasoning.
In a mixing bowl, combine the ricotta cheese, egg, half of the mozzarella cheese, and half of the Parmesan cheese. Mix until smooth.
In the 9x13 inch baking dish, spread a thin layer of the chicken and marinara mixture at the bottom.
Place three lasagna noodles on top, then spread half of the ricotta mixture over the noodles. Follow with half of the chicken and marinara mixture.
Repeat the layers: three noodles, remaining ricotta mixture, and remaining chicken mixture.
Top with the last three lasagna noodles and spread the remaining marinara sauce over the top. Sprinkle with the remaining mozzarella and Parmesan cheese.
Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes.
Remove the foil and bake for an additional 15-20 minutes, or until the cheese is bubbly and golden brown.
Allow the lasagna to cool for about 10 minutes before slicing. Garnish with fresh basil if desired.