1) To make the filling: Combine all the ingredients in a large bowl, and mix until everything is evenly incorporated.
2) Slice each pretzel bun in half horizontally.
3) Place a leaf of lettuce on the cut side of the bottom half, then top with a generous scoop (1/3 to 1/2 cup is a good amount) of chicken salad.
4) Top with the remaining bun half, cut-side-down.
5) Enjoy as is, or with your favorite sandwich side.
Yield: 10 sandwiches.