Melt butter and pour into a bowl. Add lemon juice, garlic powder, and oregano, mixing well. Peel and cut potatoes in half. Dip each piece of chicken into the butter mixture and place in a shallow baking dish. Repeat with potatoes and arrange around the chicken in same baking pan. Sprinkle "Cavender's" seasoning over all and bake in 350 oven for 1 hour, basting often with pan juices, add more lemon juice if needed.