Slice cucumber halves lengthwise with a mandoline or knife into 1/8 inch thick long slices
Mix chicken, Neufchatel cheese, mayonnaise, green onions, tomato, red pepper flakes, and garlic salt together until well blended.
Lay cucumber slices flat on a work surface. Spoon two teaspoons chicken mixture on bottom (flat) edge of each slice; roll up. Secure with toothpicks and place rolls upright like cups on a serving plate. Push a Snack Factory(R) Pretzel Crisp(R) about halfway down into the chicken mixture.