Preheat the oven to 400°F (200°C).

In a mixing bowl, combine ground chicken, breadcrumbs, egg, minced garlic, parsley, lemon zest, lemon juice, salt, and pepper.

Mix until well combined, then form into meatballs about 1 inch in diameter.

Place the meatballs on a baking sheet lined with parchment paper.

Bake the meatballs in the preheated oven for 20-25 minutes, or until cooked through and internal temperature reaches 165°F (74°C).

While the meatballs are baking, prepare the sauce by combining chicken broth, lemon juice, minced garlic, and olive oil in a small saucepan.

Simmer the sauce over medium heat for about 5 minutes, then stir in chopped parsley.

Once the meatballs are done, remove them from the oven and drizzle the lemon garlic sauce over them.

Serve warm, garnished with additional parsley if desired.