Heat oil in a deep bottomed vessel. Add cumin seeds and let them crackle.
Add the potatoes next and saute. Cook for 1-2 minutes.
Next, add in the chicken. Saute and stir for 8-10 minutes. Make sure you keep stirring or else the chicken might stick to the bottom of the vessel.
Add the ginger and green chilies next and mix.
Add onions, carrots and beans and saute the mixture for 2-3 minutes.
Add the tomatoes along with the coriander leaves and mix well. Stir and saute for 2 minutes.
Next, add in all the powdered spices along with salt. Mix well.
Add water and coriander leaves and mix well. Let the mixture come to a simmer.
Simmer the mixture for 10-15 minutes or until the chicken is completely cooked.
Add lemon juice and mix.
Serve hot with steamed rice.