In the blender, place all the ingredients, except the chicken and the olive oil. Grind until a thick cream is created.
Place the chicken pieces in a bowl, pour over the spice cream and mix well until the chicken is well covered by the cream.
Cover with cling film, place the bowl in the fridge and marinate for at least 8 hours.
Oil the chicken and divide it into a pan. Bake in a preheated oven, on the grill, at 200°C until the internal temperature is 75°C and the chicken has taken on an intense brown color.
Serve on a plate, adding the yogurt sauce and spring onion on top.
FOR THE YOGURT SAUCE
Place all the ingredients in a bowl and mix until well mixed.