Remove the small side muscle from the scallops, then pat them thoroughly dry with paper towels. Season lightly with black pepper and set aside.
Cut each bacon strip in half, arrange in a single layer in the air fryer basket, and air fry at 400°F (204°C) for 3 minutes until partially cooked but still pliable. Remove and set aside on paper towels.
In a small bowl, whisk together the maple syrup, soy sauce, garlic powder, and Old Bay seasoning until glossy and smooth.
Wrap each partially cooked bacon half-strip snugly around the equator of each scallop, securing the ends with a toothpick inserted through both layers of bacon and through the center of the scallop.
Preheat air fryer to 400°F (204°C). Lightly spray the basket, arrange wrapped scallops in a single layer without touching, and brush generously with the maple-soy glaze.
Air fry at 400°F for 4 minutes, then flip each scallop, brush with remaining glaze, and continue cooking for another 4 minutes until bacon is crispy and scallops are opaque.
Remove scallops from the air fryer when they reach an internal temperature of 120°F (49°C) — they will carry over to 125-130°F (52-54°C) while resting. Let rest for 2-3 minutes.
Transfer to a serving platter, remove toothpicks, garnish with fresh parsley, and serve immediately with lemon wedges if desired.