Preheat your oven to 400°F (200°C).
In a large bowl, combine ground chicken, breadcrumbs, Parmesan cheese, chopped parsley, egg, minced garlic, salt, pepper, and Italian seasoning.
Mix the ingredients until well combined, but do not overmix.
Form the mixture into small balls, about 1 inch in diameter.
Place the meatballs on a baking sheet lined with parchment paper.
Bake in the preheated oven for 15-20 minutes or until golden brown and cooked through.
While the meatballs are baking, heat marinara sauce in a saucepan over medium heat.
Once the meatballs are done, add them to the marinara sauce and coat well.
Serve hot, garnished with extra parsley if desired.
Enjoy your delicious chicken meatballs!