Preheat the oven to 425*F. Halve the eggplant lengthwise, then cut each half crosswise into 1/4-inch-thick slices. Arrange the eggplant slices on a lightly oiled baking sheet, brush them with the olive oil, and season with salt and pepper to taste. Bake, turning once, until softened and browned on both sides, about 15 minutes.