Make a few deep cuts into the turkey legs' flesh, but avoid going all the way to the bone. Jerk and all-purpose spices should be sprinkled on top.
The oven should be heated to 200°C/180°F/gas 6. Place the turkey chunks in a large roasting pan, skin-side up, and cook for 30 minutes. When the turkey parts are golden brown and the fluids flow clear when the thickest part of the thighs are punctured with a knife, flip the pieces over, lower the heat to 180°C/160°F fan/gas 4, and roast for another 30 minutes. Check if the internal temperature of the meat is 75C if you have a meat thermometer. Before spreading the remaining spring onions on top to serve, cover loosely with foil and let sit for 10 minutes to rest.