We did have a member lose a rabbit by doing this. If he only ate small strips he will be okay.
Problems occur when they eat a large piece that wont pass through the pyloric valve (opening from stomach to intestine) and it blocks the opening.
You might want to give him a couple of ccs of mineral oil by mouth to try to lubricate it just in case.
I hope he doesn't have any problems! :clover:
By the way, I edited your title. Please be sure to state the subject in your title, especially in emergency situations. Not only will it get more attention from our members while the problem is ongoing, it will also show up in the search function if others have the same issue in the future. Thanks!