Preheat your oven to 375°F.
Thinly slice the zucchini lengthwise into strips to serve as the 'noodles'. Optionally, lightly salt them and let sit for 5 minutes, then pat dry.
In a skillet over medium heat, add the olive oil and sauté the finely chopped onion and garlic until softened and fragrant.
Add the lean ground turkey to the skillet, seasoning with salt, pepper, dried oregano, and dried basil. Cook until browned and fully cooked, breaking it up into small pieces.
Stir in the marinara sauce and let it simmer for an additional 2-3 minutes.
In a small bowl, mix the low-fat ricotta cheese with a pinch of salt and pepper.
Layer the ingredients in an ovenproof dish: start with a thin layer of the turkey and marinara mixture, then a layer of zucchini slices. Dollop and gently spread some of the ricotta over the zucchini, then sprinkle a bit of reduced-fat mozzarella. Repeat the layers until all ingredients are used, finishing with a cheese layer on top.
Bake in the preheated oven for 20-25 minutes until the cheese is melted and bubbly, and the zucchini is tender.
Allow the lasagna bake to cool for a few minutes before serving.