Dogs aren’t made to chew so they usually swallow food whole. That isn’t usually a problem, but bolting food too fast can be. As you’ve seen, it causes them to swallow a lot of air. Orijen has big kibble size, but for dogs with sensitive stomachs, making kibble harder to digest really isn’t a good idea. Try speading his food out on a cookie sheet so he has to pick up the pieces one at a time instead, or put his food in a muffin tin. A great trick I just learned about on here is to put a length of large link chain in the food bowl so he has to get the pieces out from among the links, and chain is dishwasher safe.
