Place 2 strips of cheese, slightly overlapping, on half of biscuit round, 1/2 inch from edge. Top with 1 tablespoon pulled pork and slightly less than 1 tablespoon pineapple-onion mixture. Carefully fold to enclose filling. Transfer to ungreased large cookie sheet. Use fork tines to press edges of biscuit to seal. Poke top of biscuit with fork tines several times. Repeat with remaining biscuits, spacing 2 inches apart on 2 cookie sheets.