Heat oven to 375°F. Separate dough into 8 biscuits. Place on ungreased large cookie sheet; press each biscuit to 4 1/2-inch round. Bake 12 to 15 minutes or until golden brown.
Meanwhile, in 12-inch nonstick skillet, cook beef over medium heat 8 to 10 minutes, stirring occasionally, until thoroughly cooked; drain. Stir in sloppy Joe sauce and corn. Reduce heat to medium-low; cook 3 to 5 minutes, stirring occasionally, until hot.
With sharp knife, cut out small triangles from each cheese slice for eyes and nose, and half moon shape for mouth.
Spoon beef mixture evenly onto biscuit rounds. Arrange cheese pieces over beef mixture to look like jack-o'-lanterns. Place bell pepper piece on top of each to look like stem. Bake 3 to 5 minutes longer or until cheese is melted.