In a large mixing bowl, combine the ground chicken, breadcrumbs, grated Parmesan cheese, chopped onion, minced garlic, parsley, thyme, oregano, Dijon mustard, egg, and milk.
Season the mixture with salt and pepper to taste. Mix thoroughly with your hands or a spatula until all ingredients are well integrated.
Transfer the mixture into a loaf pan, shaping it into a loaf shape.
Spread the ketchup evenly over the top of the meatloaf for added flavor and moisture.
Bake in the preheated oven for 1 hour, or until the internal temperature reaches 165°F (75°C).
Once cooked, remove the meatloaf from the oven and let it rest for 10 minutes before slicing.
Notes
Slice the meatloaf and arrange it on a platter. Garnish with additional chopped parsley for a pop of color, and serve with a side of roasted vegetables or a fresh garden salad for a complete meal.