Preheat air fryer to 400°. In a shallow bowl, lightly beat egg. In another bowl, toss potato flakes, bread crumbs, salt and pepper. In a third bowl, toss scallops with flour to coat lightly. Dip in egg, then in potato mixture, patting to adhere. , Arrange scallops in a single layer on greased tray in air-fryer basket; spritz with cooking spray. Cook until golden brown, 3-4 minutes. Turn; spritz with cooking spray. Cook until breading is golden brown and scallops are firm and opaque, 3-4 minutes longer.