Chicken patties or you can use Grilled chicken or Chicken coated in panko breakcrumbs. (Which ever you prefer).
Cook Chicken however you prefer until the chicken is completely done and cooked through. My favorite way is to bake the chicken after rolling it in egg and panko bread crumbs. However, I have bought chicken patties from Costco and used them in a pinch too.
Then just add ham and then cheese on top and bake until warm and cheese is melted. Super easy. Also, I use the packaged or bottled dijon mustard sauce to dip this in and it makes for a great, fast, and easy meal! Enjoy!