I've been going to the Bagel Factory for many years; mostly the location in Squirrel Hill, but now more so to the Oakland Forbes and Craig location since it is near my office.
They've expanded their offerings here way past what the name "Bagel Factory" would hint. You can order a delicious burger and wings now. I recently tried the burger and thought it was pretty darn good for coming out of a 'bagel factory'.
My go to option here is the lox sandwich. You'd be hard pressed to find a better one in Pittsburgh. Served on your choice of bagel with a healthy helping of smoked salmon, capers, red onions and cream cheese this is a delicious and (somewhat) healthy breakfast (or lunch!) meal.
I like the staff here - they're pleasant and always treat me like they know me. Perhaps they do know me, I'm here often enough for coffee meetings.