SPLIT each biscuit into 2 rounds. Press or roll each biscuit half to 4-inch round; place on ungreased cookie sheets.
BAKE at 375°F 9 to 11 minutes or until golden brown.
SPREAD 1 side of each baked biscuit round with mayonnaise. Top 8 biscuit rounds with lettuce, tomato, chicken, cooked bacon and remaining biscuit rounds. Cut each sandwich into quarters. If desired, insert toothpick into each quarter.