Doha’s dining scene can be fickle and driven by fads, as anyone who has seen a line outside the latest specialty coffee house can attest. A few weeks ago I went for my third visit to The Pearl Social at the Kempinksi Marsa Malaz. For a Friday night, the restaurant was at half capacity. The bar (aka the Diver’s Club) upstairs was busy. But the restaurant was not. Occupying the spot that was once home to the overrated, overpriced and over itself Antica Pesa, the Pearl Social completes the trio of restaurants on the hotel’s mini island. This venue has been hit and miss – the location on the water…