Pistachio Chicken Salad Sandwich

I was recently sent the Joy Bauer cookbook called Slim & Scrumptious that I am really loving. I have so many recipes in it bookmarked including this chicken salad sandwich. I had leftover roasted chicken to use up so I decided to try this sandwich for dinner. I adapted it a bit by using less mayonnaise and red wine vinegar instead of white wine vinegar. It took minutes to make and tasted