I lightened up this chicken salad by using fat free yogurt in place of half the mayo. I stick with regular mayo as opposed to light mayo. The light stuff has half the calories as the original, but it loads up on artificial ingredients and thickeners to counteract the loss of calories. Plus, it just tastes strange. I like the salad on a whole wheat bun, but you could just scoop it on a bed of lettuce to cut back on carbs.