Add the chicken to the instant pot. Sprinkle the spices on top of the chicken (this will give it color). Then add the frozen corn, onion masala, and water to the pot.
Secure the lid, close the pressure valve and cook for 5 minutes at high pressure.
Naturally release pressure for 10 minutes, then open the lid, add the heavy cream, fenugreek leaves and mix well.
Garnish with cilantro and serve.