Prepare grill so coals are hot. Combine chili sauce, mustard and lime juice in small bowl; mix well. Brush over both sides of pineapple slices. Sprinkle with Tajin if desired. Let stand 15 minutes at room temperature. Brush grid of barbecue with oil. Grill pineapple slices over high heat, 1-1/2 to 2 minutes per side or until golden brown. Cut each slice in half, if you wish. Serve. veg 90