Middle Eastern Pizza

Name: Middle Eastern Pizza
Ingredients: 1 teaspoon salt; 1 teaspoon freshly ground black pepper; 1 teaspoon ground cumin; 4 cloves garlic, minced; 1 large red onion, sliced; 1 medium yellow onion, coarsely chopped; Olive oil; 1 pound pizza dough, rested at room temperature for 1 hour; 1 medium eggplant, cubed; 1/2 teaspoon garlic powder; 1/4 tablespoon sumac; 1 (32-ounce) can San Marzano tomatoes, diced; 1 pound fresh buffalo mozzarella, shredded; 1/2 cup pitted kalamata olives, roughly chopped; 1/2 cup oil-packed sun-dried tomatoes, roughly chopped; 1 1/2 cups French feta cheese, crumbled; 1 medium bunch fresh mint, chopped