Preheat your oven to 375°F. Lightly grease a loaf pan or line with parchment paper.
In a skillet over medium heat, warm the olive oil. Sauté the onion, carrot, zucchini, and spinach until soft—about 5 to 6 minutes. Let cool slightly.
In a large bowl, mix the ground turkey, almond flour, eggs, tomato paste, and cooked veggies. Add salt, garlic powder, onion powder, and pepper. Stir until just combined. Don’t overmix.
Transfer the mixture to the prepared pan. Smooth out the top gently.
Bake uncovered for 45 minutes or until the internal temperature reaches 165°F.
Let it rest for 5 to 10 minutes before slicing. That helps keep it together.