Preheat oven to 230 degrees C. Combine melted butter, oil, salt, pepper and garlic powder.
Toss the potatoes and yams in the butter mixture then set in roasting pan. Dip the drumsticks in the remaining butter mixture then set in the roasting pan. Sprinkle chicken seasoning over the chicken. Drizzle honey over the yams.
Roast in preheated oven for 40 minutes, until chicken flesh is white and pulls away from the bone.
New Zealand yams are usually only available in New Zealand and South America. They are sometimes known as oca and are a small vegetable with the flavour of a lemony parsnip. If you can not get yams, use parsnip instead.
The trick to a killer roast is your roasting pan. Make sure the bottom of your roasting pan is flat and about 1/4cm thick. That will give your potatoes a super crispy bottom.