Heat a 12- or 14-inch cast-iron skillet over medium-high; coat with an even layer of cooking spray. Add the cabbage, seasoning with caraway, cumin, nutmeg, allspice, and salt and pepper. Coat the tops of wedges with the cooking spray. Cook cabbage for 2 to 3 minutes on each side, turning, until charred. Transfer skillet to the oven and cook until cabbage is tender, 10 to 12 minutes.