Finely grate zucchini. In a small bowl, combine breadcrumbs and milk until moistened, then add egg. Mix this into the ground meat along with Italian seasoning, onion powder, garlic powder, salt, and pepper. Add grated zucchini and mix gently. Form into 1½-inch meatballs.
1.5 lbs ground beef, ¾ cup panko breadcrumbs, 2 teaspoon Italian seasoning, 1 teaspoon onion powder, 1 teaspoon garlic powder, ⅓ cup milk, 1 zucchini grated, Salt and pepper to taste, 1 egg