Just get a very large baking tray, big enough to spread everything out. Two chicken thighs per person, skin on, bone in. Scrub spuds and cut into half-inch chunks. Salad spuds are best. Cut an onion or two into big chunks. Spread it all out and coat everything with olive oil and season. Hot oven (200 degrees) for 45 minutes. Half way through, break a whole head of garlic into cloves, skin on, and mix with the rest. Optional extra, cut a couple of red peppers into big chunks and add with the garlic. Serve sprinkled with chopped parsley if you have any.