A BBQ sandwich, as Michael mentioned. I mix the chicken with BBQ sauce, then heat it in
an open faced baguette with melted extra sharp cheddar on top.
Also, I do chicken fajitas, quesadillas, burritos, etc.
Sometimes I just add the chicken to a large mixed green salad with tomatoes, sweet onion, etc, and toss with a red wine vinegar/balsamic/Dijon vinaigrette.
Some other ideas:
Chicken fried rice, chicken Caesar salad, chicken chili, chicken pita sandwiches with a yogurt sauce, chicken tortilla soup...