Wash and halve the tomatoes. Cut mozzarella into slices. Cut pancetta into pieces.
Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Line baking tray with baking paper. Open bread roll tins (see packing instructions). Separate the dough pieces and cut them in half crosswise.
Place it on the tray and press it a little flatter. Spread with barbecue sauce. Spread tomatoes, mozzarella and pancetta on top. Bake in a hot oven for about 12 minutes. Sprinkle with some salt, pepper and basil.