I grill chicken breasts specifically to make salad. I don't like large chunks so do a pretty fine 1/8 inch dice. Same size as the celery. I often eat it as a croissant sandwich, but add chopped walnuts if I'm having a scoop by itself. Condiments of choice are Miracle Whip and spicy mustard.
For those who sometimes just want a quick meal, the offerings at
Chicken Salad Chick on Bichara are good if a bit spendy.