Combine ground chicken, Parmesan cheese, breadcrumbs, parsley, minced garlic, egg, salt, black pepper, Italian seasoning, and milk in a large mixing bowl.
Transfer the mixture into a lightly greased loaf pan and shape it into a loaf form.
Bake in the preheated oven for 45 to 50 minutes until the internal temperature reaches 165°F (73.9°C).
Remove from the oven and let it rest for 5 minutes before slicing and serving.
Notes
For best results, avoid overmixing and let the meatloaf rest before slicing.