Prep the necks. Rinse the chicken necks under cold water and remove any loose bits of bone or cartilage.
Pat them very dry with paper towels. Dry skin is the key to crispiness.
Mix the seasoning. In a small bowl, combine salt, pepper, smoked paprika, garlic powder, onion powder, thyme, and cayenne (if using). Stir to blend evenly.
Coat with oil and spices. Place the necks in a large bowl.
Drizzle with olive oil and toss to coat. Sprinkle the seasoning mix over the top and massage it in so every piece is well covered.
Choose your cooking method. You can roast, air-fry, or pan-fry. All three work well: Oven Roasting: Preheat to 425°F (220°C).
Line a sheet pan with foil and set a wire rack on top. Arrange necks in a single layer. Roast for 25–35 minutes, turning once halfway, until deep golden and crisp at the edges.
Air Fryer: Preheat to 400°F (200°C).
Place necks in a single layer in the basket. Cook 16–22 minutes, shaking halfway, until browned and crisp.
Pan-Frying: Heat 2 tablespoons oil in a large skillet over medium-high. Add necks in a single layer.
Cook 15–20 minutes, turning every few minutes, until browned all over and cooked through.
Finish with lemon. As soon as they’re done, toss the hot necks with lemon juice. It brightens the flavor and balances the richness.
Garnish and serve. Sprinkle with chopped parsley and serve with lemon wedges. They’re great on their own, with a dipping sauce, or next to rice, potatoes, or a crisp salad.