Slice bacon in half to form twenty strips. In a small bowl combine softened cream cheese with sliced scallions and pepper. Remove crusts from bread. Line up 4 slices of bacon, slightly overlapping to form a square. Using a rolling pin, flatten the bread. Place the bread slice on top of the bacon. Spread the bread with the cream cheese mixture. Roll up bread and bacon as you would a rug. Secure with 4-5 toothpicks about an inch apart. Assemble remaining roll ups and place on baking sheet. Freeze until firm. Slice rollups into 4-5 pieces each secured with toothpick. Either refrigerate or freeze until ready for use. Preheat oven to 425 degrees. Place roll-ups on broiler pan so that fat collects in bottom pan. Bake until crisp, about 20-30 minutes.