Heat greased grill to medium heat.
Bring beans, barbecue sauce and seasonings to boil in saucepan, stirring frequently; simmer on medium-low heat 10 min., stirring occasionally.
Meanwhile, grill franks 10 min. or until heated through, turning occasionally and adding buns, cut sides down, to grill for the last 2 min.
Fill buns with Singles pieces and franks; top with chili.