The healthiest and most cost-effective meal in Hyannis is to help yourself to the salad and food bars at Whole Foods. First of all, you know all the items offered are nutritious and free of all icky additives you might find elsewhere in any other eatery, sit down or otherwise. Second, the bars are maintained at the same high quality of care as the rest of the store. Finally, there are tables near the beverage bar up front where you can sit and eat. Just be sure to pay first.