https://kr.koreanair.com/global/en/t...-americas.html
According to the service plan, they will serve a meal in hour 2 and again in hour 12. It's not listed, but they typically serve a "snack" in between (usually shrimp chips, kimbap or a curry bun) with the lights off.
On the old service schedule, they had distinctions between "lunch, dinner, breakfast, supper." Presumably, since it's a 7:30 departure, it will be full meal service in hour 2 (and again in hour 12 since it's not the middle of the flight).