Preheat oven to 400F and line baking sheet with parchment paper.
Rinse quinoa, then transfer to saucepan, cooking according to package directions but using chicken broth instead of water.
While quinoa is cooking, cook your chicken. I always bake my chicken for 20 minutes at 400F for perfectly juicy breasts.
Once quinoa and chicken are cooked, lay the quinoa into bottom of a 9x13 casserole dish.
Sprinkle spinach on top. Then add cubed chicken on top.
Pour on sauce, then add salt, pepper, oregano, garlic powder, and parmesan cheese. Mix in casserole dish until well combined.
Add alternating slices of mozzarella and tomatoes to the top.
Bake for 30 minutes at 400F, then top with fresh basil before serving.