Substituting table salt for kosher salt when brining chicken
If you can find canning or pickling salt, it's not iodized (and has no other additives, unlike some kosher salts), so won't contribute any off flavors that roux mentioned.

However, the different grain sizes will be a problem as they pack denser, so based on a chart from Marton's salt that ManiaxZX linked to in discussing differences in salts, they'd recommend cutting the salt by 20% when changing from kosher salt to table salt to canning/pickling salt.