Okay, let's face it. We all have to eat fast food once in a while. Whether you're stuck in an airport or dashing between errands, sometimes you have to make do with less-than-ideal choices when facing food-court options. If you’re not careful, it's easy to consume tons of unnecessary calories with little nutritional value.Navigating the food court (or drive-thru) doesn't have to be a nutrition disaster. A little knowledge goes a long way in choosing the best options. Here are our dietitian-approved choices at several popular fast food chains.