Grilled Lamb Chops with Eggplant Salad

Name: Grilled Lamb Chops with Eggplant Salad
Ingredients: 1 medium eggplant, (about 1 pound), peeled and sliced into 1/4-inch rounds; 1 medium red onion, sliced into 1/4-inch rounds; Canola or olive oil cooking spray; Juice of 1 lemon; ¼ cup chopped fresh parsley; 2 tablespoons chopped fresh mint; 1 tablespoon extra-virgin olive oil; 1 teaspoon salt, divided; Pinch of cayenne pepper; 8 lamb loin chops, 1-1 1/2 inches thick, trimmed (1 1/2-1 3/4 pounds total); ¼ teaspoon freshly ground pepper