Butterfly the breasts so they are even thickness. One at a time, place the breasts inside a gallon zip top bag, and pound the breast out (flat side of mallet) to 1/4” thickness. Place the flattened breast halves in a container and cover them with the Smoke on Wheels BBQ Marinade. Marinate for 30-60 minutes.
Preheat your Yoder Smokers YS640s Pellet Grill to 400ºF, set up for indirect grilling.
Pour the bread crumbs in a small sheet pan. Remove breasts from marinade. One by one, coat each breast in bread crumbs on one side. Season the other side with Cattleman’s Grill Trail Dust All Purpose Seasoning.
Cover the breast with a slice or two of ham. Slather the ham with a teaspoon of Kozlik’s Dijon Classique Mustard. Top the ham with two slices of Swiss. Sprinkle the grated Gruyere over the sliced cheese. Wrap the meat around the cheese, and roll to place the seam on the bottom. Transfer to a parchment lined sheet pan.
Place the sheet pan in the grill and cook at 400ºF until the chicken reaches an internal temperature of 160ºF, about 70-90 minutes.