Grilled Eggplant with oregano

2 eggplants about 2 pounds total, sliced 3/4 inches thick Sea Salt and cayenne pepper Extra virgin olive oil for brushing on vegetables, plus about 1/4 cup 2[...]

2 (1-pound) eggplant, cut crosswise into 1/2-inch-thick slices 3 1/2 teaspoons kosher salt, divided 1/2 cup plain reduced-fat Greek-style yogurt 2 tablespoons[...]