Marinate the chicken in buttermilk, salt and pepper for 30 minutes.Now remove the chicken from the 1st marinate, and add the rest of the marinade ingredients to it and leave it aside for few hrs.
Now heat oil, deep fry the chicken pieces and keep it aside .
Heat some oil in a pan, add chopped garlic, once they start smelling, add curry leaves, Pudina leaves and green chillies. Stir for few seconds and add the powdered masalas.
Now add the yoghurt and salt, followed by soy sauce and Ajinamoto. Stir for 2 minutes and add the fries chicken. Coat them well and serve.