Combine the ingredients for the Sauce Picante into a small saucepan. Heat over a low flame and stir until the roux is incorporated. Check and stir the sauce periodically. It is finished when it coats the back of the spoon. Do not over-reduce the sauce - as it will become too potent.
Pull or carve the chicken from the bones. Pile sizeable amounts of meat into the rolls. Slather the meat in the sandwiches with sauce. Serve the excess sauce on side.