In a large saucepan, sauté shallots, scallions and red pepper in olive oil about 5 minutes, stirring frequently. Add basil, olives, tuna, lemon zest, and lemon juice. Season to taste with salt and pepper and stir until well heated. Set aside and cover to keep warm. Meanwhile, bring a large pot of water to a rolling boil over high heat. Add pasta and 1 tablespoon of sea salt. Cook pasta according to package directions. Drain pasta and add to tuna-olive mixture. Toss well and briefly reheat before serving. Makes 4 servings