How to Make It
Preheat oven to 450°F.
Heat a large cast-iron skillet over medium-high. Season chicken with 1½ ￼teaspoons salt and ½ teaspoon pepper. Cook chicken, skin side down, until browned and crispy, 5 to 7 minutes. Flip and cook 2 minutes more. Transfer chicken to a plate.
Add cabbage and thyme to skillet and cook, tossing, until cabbage starts to wilt, about 3 minutes.
Stir in apple cider and place chicken, skin side up, over cabbage mixture; scatter apple around chicken.
Transfer skillet to oven and cook until chicken is cooked through, 10 to 15 minutes. Remove from oven and transfer chicken to a plate. Add vinegar, butter, and remaining 1 teaspoon salt and ¾￼ teaspoon pepper to cabbage mixture and toss until butter melts. Serve cabbage mixture with chicken, topped with parsley.