My favorite spot for lunch in downtown Pittsburgh. The food is delicious and inspired - not the generic sandwiches and sodas you get at a corner deli. I've had their soups, sandwiches, sides, desserts, and coffee. The breakfast menu looks amazing as well but I'm never downtown for breakfast so I can't say much about that.
The prices are a bit higher for a meal than, say, nearby Chipotle or Subway, but the quality of the food you get more than makes up for the difference in my opinion. I usually get a small soup and small side and that's enough for a satisfying lunch for me and comes out to be about $7-8. They have a core menu of items and also daily and monthly specials so there's always something new to try. One thing to keep in mind is that the sandwiches are made to order while the salads are pre-made that morning and in to-go boxes.
Seating is limited to bar-style seating along the wall and windows, which works fine for me since I'm usually just looking to grab a quick lunch during the workday and not to have a long sit-down meal.
I hope Bluebird Kitchen never leaves downtown because there's really no other similar spot downtown like it.