In a pan, pour oil. Once hot, add onions. Saute until soft and translucent.
Add ginger garlic paste and cook for a minute.
Add green chillies and mix for a minute.
Add in the chicken along with salt. Cover and cook for 10 minutes.
Open lid and increase heat to high and reduce the water if there is any.
Reduce heat to low and add spice powders. Cook for a minute.
Turn off the flame and let it cool for a bit.
Drop in cabbage and mix until combined.
Add mayonnaise. Mix.
Add parsley. The filling is ready.