Step 1Preheat the oven to 200 °C/ 400 °F (fan assisted), or 220 °C/ 425 °F (conventional). To make the lemon herb marinade (parsley oil), simply place all the ingredients in a high speed food processor and blitz until fine.
Step 2Remove the giblets and string from the chicken. Splay open the chicken, breast side down with the drumsticks facing towards you.