In a small bowl, combine the ham, broccoli, cheese, pepper, mayonnaise and mustard if desired. Unroll, crescent dough into two rectangles; seal seams and perforations. Spread filling down center of each rectangle. Fold dough over filling and pinch to seal; tuck ends under.
Place seam side down on an ungreased baking sheet. Brush tops with egg white; sprinkle with almonds. Bake at 375° for 11-13 minutes or until golden brown.