Yes, there are currently 29 of them in the United States found across 18 airports ATL, BOS, CLE, DEN, DFW, DTW, FLL, IAD, IAH, IND, MIA, PDX, PVD, SAN, SEA, SFO, SYR, and TUS.
Internationally there are even more, I know of 101 PP restaurants located outside of the United States.