BLUE Cheese Spread: Beat ingredients with mixer 1-1/2 min. or until well blended, stopping after 1 min. to scrape bottom and side of bowl.
APPETIZER Crisps: Roll pastry dough on lightly floured surface to 1/8-inch thickness; cut into 42 (3-1/2-inch) rounds (or into 14 rounds for trial recipe), rolling trimmings as necessary. Place in single layer in sheet pans; prick with fork.
SPREAD each dough round with 2 tsp. of the BLue Cheese Spread; top with 12 potato slices, arranging in circular pattern and overlapping as necessary to fit. Brush with oil; season with salt and black pepper.
BAKE in 400ºF-convection oven 10 to 12 min. or until potatoes are crisp and edges of crusts are lightly browned. Top each tart with about 1 tsp. onions, 1/4 tsp. red peppers, 1 tsp. bacon and pinch of chives.