Drizzle oil into the base of the pot. Season chicken with salt and pepper. Add to hot oil and brown on both sides for 2-3 minutes, until nicely browned. Remove from pot and set aside.
1 to 1 1/2 pounds boneless chicken thighs, 2 teaspoons olive oil, Salt and Pepper
Add butter and stir until it is melted. Add onions and mushrooms to the pot. Cook for about 5 minutes until they are starting to soften. Mix in garlic and cook for another minute.
2 Tablespoons butter, 1 small onion, 8 oz white mushrooms, 4 cloves garlic
Pour in chicken broth, rice, thyme, oregano, Italian seasoning, poultry seasoning, salt and pepper. Stir until well combined.
2 cups chicken broth, 1 1/2 cups uncooked long grain white rice, 1 teaspoon dried thyme, 1 teaspoon dried oregano, 1 teaspoon Italian seasoning, 1/2 teaspoon poultry seasoning, Salt and Pepper
Gently arrange chicken on top of the rice mixture.
Close and lock the lid. Switch Instant Pot to manual high pressure and cook for 9 minutes. Let it naturally release for 5 minutes, quick releasing to finish.
Remove the chicken and fluff the rice with a fork. Top with a generous amount of parsley to serve.