Flatten The Chicken To 1/4-In. Thickness. Place A Slice Of Cheese And Ham On Each To Within 1/4 In. Of Edges. Fold In Half; Secure With Thin Metal Skewers Or Toothpicks. Brush With Oil And Roll In Bread Crumbs. Grill, Covered, Over Medium-Hot Heat For 15-18 Minutes Or Until Juices Run Clear.