Preheat the oven to 350 degrees and lightly grease a loaf pan.
In a large bowl, combine the ground turkey, breadcrumbs, egg, grated carrot, grated zucchini, diced red bell pepper, diced onion, garlic powder, salt, and black pepper.
Mix the ingredients with your hands or a spoon until evenly combined, but avoid overmixing.
Transfer the mixture to the prepared loaf pan and press it into an even shape.
Spread the ketchup evenly over the top of the meatloaf.
Bake for 50 to 55 minutes until the internal temperature reaches 165 degrees.
Remove from the oven and let the meatloaf rest for 5 minutes before slicing.