Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
In a large mixing bowl, combine the ground chicken, egg, almond flour, garlic powder, onion powder, sea salt, black pepper, and dried oregano.
Gently mix the ingredients with your hands until just combined, being careful not to overwork the meat which can make it tough.
Roll the mixture into 1.5-inch meatballs and place them evenly spaced on the prepared baking sheet.
Bake for 15 to 18 minutes until the meatballs are golden brown and reach an internal temperature of 165°F.
While the meatballs bake, warm the marinara sauce in a small saucepan over medium-low heat until it reaches a gentle simmer.
In a medium skillet, sauté the zucchini noodles with olive oil over medium heat for 2 to 3 minutes until they are just tender.
Carefully toss the baked meatballs into the warm marinara sauce to coat them thoroughly.
Divide the zucchini noodles between plates, top with the meatballs and extra sauce, and finish with a garnish of fresh chopped basil.