Whenever I have just a little bit of leftover chicken, I make a small batch of chicken salad and pick up a few croissants from the bakery. Here's what I put in mine.
leftover shredded or cubed chicken Mayo (not salad dressing) Rosemary (crushed) Nature's Seasoning celery walnuts (or other nuts...I sometimes use almonds) dried cranberries (I sometimes add dried apricots too)
Mix together using your personal preference for amounts. I personally like lots of cranberries & nuts but just a little bit of mayo.
I serve mine on a croissant with a little lettuce.