Preheat oven to 350 degrees. Brush a baking dish with melted butter and set aside.
Tenderize chicken breasts and place them with the narrowest point facing you. Roll one slice of ham around a chunk of cheese. Place one of these on the end of a chicken breast and roll the chicken up and around it, securing the end with one or two toothpicks to keep it from unraveling.
Combine the crackers, taco mix and Kfibre in a ziplock bag and crush with a rolling pin or mallet, or pulse in a food processor for a finer coating. Move the crumb mixture to a bowl. In a separate container melt the butter.
Dip each chicken breast into the butter, covering entirely, then roll in the crumb mixture to completely coat. Place them adjacent to each other in the buttered dish. Sprinkle remaining crumbs over the breasts and drizzle with any remaining butter.
Bake uncovered for 50-60 minutes. Lightly tent the dish with foil near the end of the cooking time if they are browning too much. Remove from oven and allow it to rest uncovered for 10 minutes before serving.