In a small bowl, mix together the Cajun seasoning, oregano, salt, and black pepper. Lightly sprinkle the mixture on both sides of the chicken, reserving any remaining seasoning for later use.

Set the electric pressure cooker to the “sauté” setting and allow it to heat until hot. Add the olive oil and let it heat for about 10 seconds. Place the chicken in the pot and sear until it is golden brown on both sides. Remove the chicken from the pot and keep it warm.

Add the chopped onion, bell pepper, and celery to the Instant Pot. Cook for about 6 minutes, stirring frequently to prevent burning. Add the garlic and cook for another minute until it is fragrant.

Add the reserved Cajun seasoning to the vegetables and stir well. Add rice in an even layer over the vegetables. Pour in the chicken broth and give it a quick stir.

Place the seared chicken on top of the rice and vegetable mixture. Secure the lid on the Instant Pot and set the valve to the sealing position. Select the “manual” or “pressure cook” mode and set the timer for 10 minutes.

Once the cooking time is complete, allow the pressure to naturally release for 5 minutes. Then, carefully perform a quick release to release any remaining pressure.

Remove the lid and fluff the rice with a fork. Serve the Cajun Chicken and Rice hot, garnished with chopped parsley if desired. Your flavorful Instant Pot Cajun Chicken and Rice is ready to be enjoyed!