First time I can ever recall being offered meal vouchers for such a short delay. While on board my JFK-SFO flight, we had a mechanical requiring moving to a new gate and new aircraft and departure time was pushed back 2 hours. PA announcement made that they were processing $12 meal vouchers at the gate and to pick one up on the way out, about 45 mins after boarding. When I exited, as a business class passenger, I was offered two vouchers ($24 total). Really only needed one which covered a sandwich at Au Bon Pain and a bottle of water at $11.95, as I knew an airplane meal was ahead of me, but nice of AA to offer the extra one.