Preheat your oven to 375°F (190°C).
Cook the whole wheat lasagna noodles in a pot of boiling water until al dente, then drain and set aside.
In a skillet over medium heat, sauté the ground turkey in olive oil until browned and fully cooked.
Season the turkey with garlic powder, dried oregano, sea salt, and black pepper.
Add the fresh spinach to the skillet and stir until the leaves are completely wilted into the turkey.
In a small bowl, whisk together the ricotta cheese and egg whites until the mixture is smooth and creamy.
Spread a thin layer of tomato puree on the bottom of a small oven-safe baking dish.
Place a piece of noodle on the bottom, then layer half of the turkey-spinach mixture and half of the ricotta mixture.
Repeat the layers with the remaining noodle, turkey, and ricotta, then top with the remaining tomato puree and shredded mozzarella.
Bake for 20 minutes until the sauce is bubbling and the cheese has a golden, melted finish.