Start by heating oil in a pan over medium heat.

Add finely sliced onions and green chilies to the pan and fry them until they turn golden brown.

Next, add ginger garlic paste to the pan and fry for around a minute.

Now, it's time to add the spices. Stir in ground cumin, coriander, turmeric, and garam masala, and fry them for another minute to release their aromatic flavors.

Add chopped tomatoes to the pan and cook until they become soft and blend well with the onions.

Pour the yogurt mixture into the pan and sauté until the yogurt cooks down and the sauce thickens.

In another pan, fry the chicken with whole spices such as cumin seeds, coriander seeds, and bay leaves until it becomes golden brown.

Add the fried chicken to the bhuna masala and mix well.

Cover the pan and let the chicken cook on low heat until it becomes fully cooked and tender.

Finally, garnish the chicken bhuna with fresh coriander leaves for added freshness and aroma.