Could have. Any treat can. Not that treats are bad, but if they get picky, sometimes treats need to go bye bye for awhile.
Canned isn't going to hurt, but you shouldn't have to give it.
Best to put pups in their crates when sitting down to dinner if company is over. Chicken may not be so bad, but what if it's something more fattening or fried.. Then you may end up at the ER.