2.Place combined potato and oil on oven tray. Roast, uncovered, in hot oven about 30 minutes or until browned lightly and tender.
3.Meanwhile, make parmesan and basil dressing. Blend or process ingredients until just combined.
4.Cook pancetta, in batches, in heated large non-stick frying pan until crisp, drain on absorbent paper.
5.Combine potato and half of the dressing in large bowl, add pancetta, tomato, olives and rocket. Toss salad gently to combine, divide among serving plates then drizzle with remaining dressing.
Pancetta, rather like an Italian bacon, is cured but not smoked and can be found in most delicatessens and some supermarkets.