Marinate the chicken with turmeric powder and salt.
Let it marinate for 30-60 minutes.
Heat some oil in a thick bottom pan and deep fry the chicken pieces to cook them.
It should be like flash-frying. Do not make them crispy fried.
Use a slotted spoon and transfer the fried chicken to a plate lined with kitchen towel to soak up any extra oil.
Heat 1 teaspoon oil in a pan.
Add the finely chopped onions.
Once they are tender, add the chilli flakes and combine well.
Now add the chopped curry leaves.
Mix well and cook for another 2 minutes while stirring frequently.
Now add vinegar, salt, and combine well.
Now add the sliced green chillies.
Cook for another minute, add the fried chicken and mix well.
Continue cooking for a few more minutes.
Switch off and serve hot.