i would say the best place to get stuff at is arbys if u MUST. just get some roastbeef and cheese with none of the yummy extras. or just get burgers from the other places but again no extras and i dont recommend fast food at all!
If you have a paneras bread in your area (my current employer, im only in high school) I get a chicken ceaser salad and its amazing!!! not as good for all you cuz i get it for 3 dollars iwth like triple chicken. Boston market is a great thing too!!!
Since grilled chicken breast is pretty low-fat, it's OK to have the bread. With the Wendy's triple, you wanna skip the bun.
In general, avoid eating higher GI carbs (bread, potato, fruit) and fats in the same meal.