Whisk Together 1 Cup Of Mayonnaise, Pepper, Garlic Powder, And Celery Salt Until Combined. Combine The Chicken, Celery, Cranberries, And Cashews In A Large Bowl. Pour The Mayonnaise Mixture Over The Chicken Mixture And Stir Until Evenly Combined. Spread 1/2 Tablespoon Of Mayonnaise On Each Slice Of Toasted Bread. Divide The Chicken Salad Between Four Of The Slices Of Toast; Top Each With A Lettuce Leaf And A Slice Of Tomato. Complete Each Sandwich With The Remaining Toast Slices.