Season under the skin, not just on top. The seasoning that goes directly onto the meat rather than sitting on the skin is what flavors every bite rather than just the exterior.
A Magnalite pot or Dutch oven with a tight-fitting lid is ideal here. The heavy lid traps steam and produces a moist, tender result throughout the full 2-hour bake.
Do not skip the pepperoncini jar juice. That small pour of brine adds a bright, tangy acidity that cuts through the richness of the butter and gravy and defines the whole dish.
Better Than Bouillon adds a concentrated savory depth that standard broth cannot replicate in the same amount of liquid.