I don't usually review airports but as I stood in the TSA line yesterday thinking these folks are pretty nice, I realized I should write a review.
There's a shuttle, like a tram, monorail that goes between the airport and the terminal. TSA here is really efficient. When you arrive in PIT it is well signed to find your way out, to The Taxi Stand or Uber Stand or Baggage Claim or wherever. When you're departing once you get off the monorail there's a small shopping area with some interesting shops to roam around in if you have time. It's a short walk to your gates and each terminal isn't 30 gates long.
It's a good set up for departing travelers and you can easily take advantage of this food court and shopping area despite what terminal your gate is at.