Dijon Chicken Salad Sandwich

4 cups chopped cooked chicken
1-1/2 cups chopped celery
1/2 cup Mayonnaise
1/4 cup Dijon Mustard
2 tablespoons lemon juice
1/8 teaspoon ground black pepper
8 lettuce leaves
16 slices rye bread

Mix chicken, celery, mayo, mustard, lemon juice and pepper until well blended. Place 1 lettuce leaf on each of 8 bread slices. Cover evenly with the chicken salad; top with remaining bread slices. Makes 8 servings