I don't know how the Bears work with their TEs, but whenever we had a TE out there in high school, if he saw a guy lined up in front of him or saw a guy blitzing it was his responsibility at the very LEAST to get a chip block on the defender before he goes out on route, or stay in to block completely. It's also the job of the outside tackle there to call out a shift to get the outside guy, with the guard getting the tackles responsibility and the center taking the guards. The QB also needs to be able to notice that and audible out, as someone already mentioned. Hopefully it's just a combo of SD having a great DL and it being the first game of the year.