Uncle Sammy's just opened on 1231 West Fullerton and delivers great sandwiches for 5$ no minimums and they usually are there within fifteen minutes. I recommend the Little Italy or the Windy City. They also have a website for online ordering.
Have you tried Sweet & Savories? It's on Fullerton right at the corner of Fullerton/Ahsland/Clybourn. Or stop by Pequod's for lunch - really good pizza and then head to Vanille for a cappucino and amazing dessert!