Greek Pizza with Pourable Crust

Name: Greek Pizza with Pourable Crust
Ingredients: 1 Japanese eggplant, sliced into 1/4-inch rounds; Kosher salt and freshly ground black pepper; 1 bell pepper, sliced into 1/4-inch rounds; 2 teaspoons canola oil; Nonstick cooking spray; 2 tablespoons cornmeal; 3/4 cup whole-wheat flour; 1/4 cup all-purpose flour; 1 teaspoon dried oregano, crushed between fingers; 3/4 cup reduced-fat milk; 2 large eggs, beaten; 8 artichokes from a 14-ounce can, drained, rinsed and halved; 1/4 cup thinly sliced red onion; 1 cup cherry tomatoes, halved; 2 ounces (1/2 cup) crumbled feta; Fresh mint leaves and lemon wedges, optional