Preheat oven to 375°F (190°C). Line a loaf pan with parchment paper.
In a bowl, combine ground chicken, breadcrumbs, Parmesan, garlic, egg, milk, parsley, Italian seasoning, salt, and pepper. Mix until blended.
Transfer mixture to the loaf pan, pressing evenly.
Bake for 25-30 minutes until internal temperature reaches 165°F (74°C).
Let rest 5 minutes before slicing.
Notes
Storage: Refrigerate for 3-4 days or freeze for 2 months. Reheat in oven for best texture. Variations: Add red pepper flakes for heat, use almond flour for low-carb, or swap Parmesan for cheddar.