Remove the bologna from its packaging and remove any wax or covering from the outside of the meat.
Lightly slather with the yellow mustard.
Liberally season with the barbecue rub. You want a fairly heavy coating of rub, but you may or may not use all of the rub, depending on the size and shape of the bologna chub.
Preheat your smoker to 225-250 degrees. Once heated, add the hickory chips.
Smoke the whole bologna for 3-4 hours, rotating and flipping the bologna each hour.
Remove from the smoker and allow to cool. Enjoy thinly sliced, or thickly slice and fry it desired.