Smothered Pork Chops with Cornbread

Name: Smothered Pork Chops with Cornbread
Ingredients: 1/4 cup plus 1 teaspoon vegetable oil, divided, plus more for dish; 1 cup fine yellow cornmeal; 1 cup plus 2 tablespoons all-purpose flour (spooned and leveled), divided; 4 teaspoons baking powder; Coarse salt and pepper; 1 1/4 cups whole milk; 1 large egg, lightly beaten; 4 bone-in pork chops (1 1/2 pounds total; 3/4 inch thick); 1 medium white onion, sliced; 1 1/2 cups chicken or vegetable broth; 1 bunch kale, tough stems and ribs removed, leaves cut into pieces