Preheat oven (electric cooker: 220 °C/circulating air: 200 °C/gas: see manufacturer). Cut Brie into thin slices. Wash, halve and stone the peaches and cut into thin slices.
Unroll the dough and place on a baking tray with the baking paper. Spread a thin layer of crème fraîche, leaving a small rim free. Cover with peach wedges, pancetta and brie. Season with pepper. Bake in a hot oven for 15-20 minutes.
In the meantime, sort out the rocket, wash and spin dry. Remove the tarte flambée from the oven, sprinkle with honey and cut into pieces. Sprinkle with rocket.