Debone the thigh. Cut the meat into large chunks (about 5 cm).
In a wide ovenproof pan or casserole, heat olive oil over medium–high heat. Brown the turkey (incl. the bone) on all sides, then remove it to a plate.
In the same pan, add onion and cook until soft. Add garlic and tomato purée; stir for 1 minute. Pour in the red wine and let it bubble briefly.
Return the turkey to the pan. Add the chopped tomatoes, Vegeta or stock cube, cinnamon, allspice, bay leaf and enough hot stock to just cover. Simmer gently for 20 minutes.
Remove the bone, stir in the orzo and pour over the remaining stock. Taste and adjust salt and pepper.
Transfer the pan, uncovered, to a preheated oven at 180 °C (fan 160 °C). Bake for 40 minutes, until the orzo is tender and the sauce thick and glossy. Add a splash of water if it dries too much.
Remove from the oven and rest for 10 minutes before serving. Sprinkle with grated cheese and serve with lemon wedges.