Preheat air fryer to 400°. Brush potatoes with oil. Place on tray in air-fryer basket. Cook until potatoes are tender, 30-40 minutes; cool slightly. , Cut potatoes in half lengthwise. Scoop out pulp, leaving a 1/4-inch thick shell. In a large bowl, mash the potato pulp; stir in spinach, 3/4 cup cheese, bacon, onion, cranberries, pecans, butter, salt and pepper. Spoon into potato shells, mounding slightly. , Reduce heat to 360º. Place potato halves, cut side up, on tray in air-fryer basket. Cook 10 minutes. Sprinkle with remaining 1/4 cup cheese; cook until cheese is melted, 1-2 minutes.