In a large bowl, mix together all the meatball ingredients. For best results we suggest you use a microplane for the garlic and crumble up the feta well. Cover and let rest in the fridge while you prepare everything else.
Preheat your oven to 400°F (200°C).
Wash and chop your potatoes into 1 inch cubes. Wash the zucchini and cut them in 1/2 inch half moons.
Season the veggies with oil, garlic powder, salt, pepper, and lemon juice.
On a large sheet pan, add the potatoes and bake for 10-15 minutes.
While they bake, remove the meatball mixture from the fridge and form 1 inch balls. Work with wet hands for easy handling.
Remove the sheet pan from the oven and add the meatballs and the zucchini, along with the red onions.
Continue baking at 400°F (200°C) for another 10-15 minutes or until the meatballs are cooked through, reaching an internal temperature of 165°F (74°C).
Garnish with feta cheese and fresh chopped herbs.