Since Humble Pie is airport pizza, I need to grade it on a curve, but overall it's definitely nothing spectacular. The crust is closer to Domino's in taste and texture than neapolitan, and they put a ton of cheese on their Margherita pie, but the 8 to 10-inch pie is perfect for a "light" meal before a flight. The pies also come out pretty quickly (under 10 minutes, it seemed), so it's a good option if you don't have time for a real sit down meal. The staff is nice and lively, and the prices are fair for an airport.
Overall, no real complaints, but no real highlights.