Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper for easy cleanup.
In a large mixing bowl, combine the ground chicken, egg, almond meal, sea salt, black pepper, garlic powder, onion powder, lemon zest, and finely chopped parsley.
Gently mix the ingredients until just combined, being careful not to overwork the meat which can make the meatballs tough.
Scoop and roll the mixture into 1.5-inch meatballs and arrange them evenly on the prepared baking sheet.
Bake for 15-18 minutes, or until the meatballs are golden brown on the outside and cooked through to an internal temperature of 165°F.
While the meatballs bake, spiralize the zucchini into thin noodles and lightly sauté them in a skillet with olive oil over medium heat for 2-3 minutes until just tender.
In a small saucepan, warm the marinara sauce over medium-low heat until simmering.
Divide the zucchini noodles between plates, top with the baked chicken meatballs, and finish with a generous ladle of warm marinara sauce.