Chickpea salad with eggplant

Ingredients 1 medium globe eggplant, (about 1 pound), stem removed 1 tablespoon extra-virgin olive oil 2 tablespoons freshly squeezed lemon juice (from 1 small lemon) 2 tablespoons balsamic vinegar 1 teaspoon ground cumin 1/4 teaspoon kosher or sea salt 1 (15-ounce) can chickpeas, drained and rinsed 1 cup sliced sweet onion (about 1/2 medium onion)…