ShutterstockWhen you're out running errands, meeting friends for lunch, or just not in the mood to cook dinner, hitting up a salad chain is a healthy alternative to fast food. Gone are the days when a sad side salad was the only green offering to be found at a chain restaurant. Nowadays, the bar is pretty high when it comes to salads that are delicious, nutritious, and extremely colorful.You can definitely eat the rainbow at many of the popular restaurants on this list, and some of the salads ar