In a large bowl, mix egg, liquid, parsley, garlic, breadcrumbs, onion powder, salt, and pepper. Fold in chicken. Form into small meatballs and chill.
Cook noodles in salted water until tender. Drain and set aside.
In a large pot, heat olive oil and sauté carrots, celery, and onion for 6 minutes. Add 4 cups of broth and bring to simmer.
Drop in chilled meatballs and cook for 10 minutes. Add more broth as needed.
To serve, place noodles in a bowl, top with soup and meatballs. Garnish with parsley or dill.