Actually other things have come from Star Trek already--they are currently operating on the idea of creating plasma 'shields' to help protect spacecraft from space debris.
What's more, the idea of powerful lasers that can take missiles out already exists.
Further, the concept of a hologram/virtual world is already within our grasp--so those are all likely to come before food replication.
Though, they have invented a 3D printer whose technology may someday be able to be used to do just that with food.