With instant pot on sauté mode, heat 1 tablespoon oil.
Add chicken. Sauté, stirring occasionally, for 3-4 minutes or until the chicken is lightly browned.
Remove from pot. Set aside.
Add 1 tablespoon oil. Add onions and curry leaves. Sauté, stirring occasionally, for 2-3 minutes or until onions are browned.
Add ginger and garlic. Sauté, stirring, for a minute or until fragrant.
Add ground turmeric, ground cumin, ground fennel and red chili powder. Sauté, stirring, for a minute or until aromatic.
Add tomato paste. Sauté, stirring, for a minute.
Add water and chicken. Season with salt. Stir to combine.
Cover the instant pot with lid.
Turn on pressure cook mode. Cook for 5 minutes. Let the pressure release naturally. Remove lid.
On sauté mode, stir in garam masala. Simmer for about 2 minutes.