Preheat your oven to 375°F (190°C).
Cook the brown rice lasagna noodles in boiling salted water according to package directions until al dente, then drain and set aside.
In a non-stick skillet over medium heat, brown the ground turkey while breaking it into small crumbles.
Season the turkey with dried oregano, garlic powder, sea salt, and black pepper.
Add the fresh baby spinach to the skillet and sauté for 1-2 minutes until just wilted, then remove from heat.
In a small bowl, stir the ricotta cheese with a pinch of sea salt to make it creamy.
In a small oven-safe baking dish, spread a thin layer of marinara sauce on the bottom.
Layer one noodle (cut to fit if necessary), followed by half of the turkey and spinach mixture, half of the ricotta, and a drizzle of marinara.
Repeat the layers with the remaining noodle, turkey mixture, ricotta, and marinara.
Top the final layer with shredded mozzarella and grated parmesan cheese.
Bake for 20-25 minutes until the cheese is bubbly and slightly golden on top.
Let the lasagna rest for 5 minutes before serving to allow the layers to set.