Preheat the oven to 180C/350F/Gas 4.
Rub half the butter thickly over the bottom of an ovenproof dish, then pack the chicory halves, in a single layer, into the dish. Drizzle over the honey and orange juice and season with salt and freshly ground black pepper. Dot with the remaining butter.
Transfer to the oven and roast, uncovered, for about an hour, turning and basting the chicory every 15 minutes. Keep a close eye on proceedings towards the end of the cooking time and take the dish out of the oven when the juices have reduced to a few spoonfuls of thick syrup and the chicory is looking suitably caramelised. Serve warm.