709 H Street, NW
Thanks to @WeinDC for tweeting us the tip:
“Is this a @Potbelly I see coming to 7th and H? @PoPville”
The Potbelly will be located in the former Subway sandwich shop right next to the future Cava Grill (the former Capital Q BBQ space.) A Potbelly was previously located in Chinatown nearby at 726 7th Street, NW which today is a Lime Fresh Mexican Grill. Whew.