Heat oil in a large pan or skillet over medium heat
Add cumin seeds and let them splutter
Add finely chopped onion and sauté until translucent.
Add ginger-garlic paste and green chili (if using). Sauté for a minute until the raw aroma disappears.
Add chopped tomatoes and cook until they turn soft and mushy.
Add turmeric powder, red chili powder, coriander powder, and salt. Mix well and cook for another minute.
Add minced chicken to the pan and break up any lumps with a spatula.
Cook the chicken keema until it is well browned and cooked through, stirring occasionally.
Sprinkle garam masala over the cooked keema and mix well.
Garnish with fresh coriander leaves.
Serve hot with rice, bread, or as desired.