I shouldn't worry, Bobby, they pick up after being planted out anyway! They're very forgiving!
Yes, it's always nice to see sturdy pencil-like plants going in, but eventually, they always catch up, and you'll get them to a decent size when ready!
For the first time ever, I've got some leeks which are nearly pencil size, but can't find the space to plant them yet, so they'll have to wait until they're fountain pen size!