01 -
Set the oven to 375°F (190°C) and prepare a baking sheet lined with parchment paper.
02 -
In a large bowl, mix together the ground chicken, breadcrumbs, Parmesan, milk, egg, garlic powder, onion powder, salt, and pepper until well combined.
03 -
Spread the chicken mixture on parchment into a flat rectangle about 1/2 inch thick.
04 -
Layer the ham slices on top, followed by the Swiss cheese.
05 -
Carefully roll up the mixture into a loaf, enclosing the ham and cheese. Place it seam-side down on the baking sheet.
06 -
Spoon marinara sauce over the top of the loaf. Bake for 45–50 minutes, or until the internal temperature reaches 165°F (74°C).