Cook lasagna noodles according to package instructions until al dente, then drain and set aside.
Season chicken breasts with garlic powder, dried oregano, salt, and pepper.
Heat olive oil in a skillet over medium heat and cook chicken until fully cooked, about 6-7 minutes per side. Let cool, then shred the chicken.
In a bowl, combine shredded chicken, ricotta cheese, and half of the mozzarella cheese.
Spread a thin layer of marinara sauce on the bottom of a 9x13 inch baking dish.
Layer 4 lasagna noodles over the sauce. Spread half the chicken mixture over the noodles, then spoon over 1 cup of marinara sauce. Repeat layers ending with noodles topped by remaining sauce.
Sprinkle the top with remaining mozzarella and Parmesan cheese.
Cover with foil and bake for 25 minutes. Remove foil and bake an additional 15 minutes until cheese is bubbly and golden.
Let the lasagna rest 10 minutes before slicing and serving.
Notes
For extra flavor, add fresh basil leaves between layers or on top before serving.