I also am gonna say Ruby Tuesday's has some great options - especially their sides and their 500cal and under menu.
Honestly, though, I don't eat out much anymore, and when I do, I let myself have a treat of something unhealthy (while focusing on not eating beyond when I am full!). Most of the healthier options at restaurants I can make so much tastier at home. So instead of meeting a friend for dinner, I'll often eat dinner at home and meet up for drinks instead afterwards. Or go shopping instead of getting lunch.
Panera is good for a lunch on the go, though. They list all their calories on the menu. Their chicken noodle soup is awesome and low cal, paired with half a sandwich and an apple instead of baguette, and I feel like I've made a wise choice.