I have worked with a few kids who used to do that. Either that, or take their time eating something so that it would take 30 minutes for a piece of cheese. We have worked on slowing down, and finishing what's in your mouth and swallowing before taking another bite. It's def gotten better as they get older.
My son does the same thing I swear we always are worried he is going to choke.. and anyone that watches him is like :"ohh he put way too much food in his mouth!" and we are always like "yep, thats normal."