Preheat the oven to 220°C (200°C fan) / Gas mark 7 and line a roasting tray with parchment paper.
Arrange the 12 large chicken wings in a single layer on the lined tray.
Cut the 2 lemons in half, squeeze the juice evenly over the wings, then cut each half into halves and tuck the lemon pieces between the wings.
Drizzle the 2 tablespoons olive oil over the wings, then sprinkle with 1 teaspoon dried oregano, 1 tablespoon cracked black peppercorns (or less to taste), and 1 teaspoon salt.
Roast the wings in the preheated oven for 1 hour, or until golden and cooked through, turning once if needed for even browning.
Serve immediately, arranging the roasted lemon pieces with the wings.