Use paper towels to make sure the chicken is dry before beginning.
Place the chicken on a plastic cutting board or other washable surface. Sprinkle all sides liberally with seasoned salt.
Add the canola oil and butter to a large skillet and heat over medium-high heat until the butter melts. Add the seasoned chicken, skin side down, and cook until a deep brown color forms. Turn the chicken oven and repeat on the other side.
Remove the chicken pieces from the pan and place them on paper toweling to drain. Pour off excess fat from the pan.
Add all the chicken pieces back to the pan, nestling them in so that they all fit. Pour over the barbecue sauce.
Bring to a boil, then cover and reduce the heat to simmer. Cook for 45 minutes to 1 hour or until the chicken is tender. Check frequently during the cooking time and add 1/4 to 1/2 cup water if needed to prevent the barbecue sauce from burning, but not so much that the sauce thins out.
Arrange the chicken on a serving platter and pour all the pan juices over the chicken.
Notes
Completely cooled leftovers may be stored in an airtight container, refrigerated, and used within 2-3 days. To freeze, transfer to a freezer-safe container and keep frozen for up to 2 months.
To reheat, place in a baking dish covered with foil and reheat in a low oven until warmed through. If reheating from frozen, thaw overnight in the refrigerator.
May be prepared in advance and either held in a very low oven or refrigerated and reheated just before serving.