Sbarro: Free Skinny Slice of Pizza! January 15th, 2013 By Meagan Leave a Comment This post may contain affiliate links, which means I will make a small commission if you click and make a purchase.Thank you for supporting Cha-Ching on a Shoestring! Stop by Sbarro to get a FREE skinny slice of pizza today (1/15). Their new skinny slices only have 270 calories. You’ll need to print your Sbarro coupon to get your freebie. YUM. Free lunch – Can’t beat that!