Preheat your oven to 375°F (190°C).
In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add the ground chicken or turkey to the skillet. Season with salt and pepper. Cook for about 6-8 minutes, stirring occasionally, until the meat is browned and cooked through.
Add the diced onion and minced garlic to the skillet. Sauté for another 3-4 minutes until the onion becomes translucent. Stir in the tomato paste, ground cumin, ground cardamom, dried oregano, and chili powder. Mix well to combine and let the flavors meld for about 2 minutes.
In a large casserole dish, start layering by placing half of the zucchini slices at the bottom. Next, spoon half of the chicken mixture over the zucchini. Add half of the diced orange bell pepper and top with half of the tomato slices. Repeat the layers with the remaining zucchini, chicken mixture, bell pepper, and tomato slices.
In a mixing bowl, combine the almond flour, coconut flour, and remaining olive oil. Slowly add the unsweetened almond milk, stirring until you achieve a smooth consistency. Season with salt and pepper to taste.
Pour the flour mixture evenly over the layered casserole. Sprinkle with fresh tarragon for added flavor. Cover the casserole dish with aluminum foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 15-20 minutes, or until the top is golden and bubbly.
Once done, remove the casserole from the oven and let it cool for a few minutes. Garnish with additional fresh tarragon before serving.