Ancient Fast Food

I guess it's been available since mankind settled down in cities. 
2,000-Year-Old Fast Food Shop Uncovered in Pompeii | Archaeology | Sci-News.com (sci-news.com)

And a barber shop, probably not far away.
https://www.pompeiiinpictures.com/pompeiiinpictures/R8/8 04 12.htm