Rub the chicken thighs with salt, black pepper, and dried oregano. Ensure they're evenly coated.
Set your Instant Pot to 'Sauté' mode. Add olive oil and let it heat up. Once hot, add the seasoned chicken thighs, skin side down, and brown for about 5 minutes. Flip and brown the other side for another 5 minutes. Remove the chicken and set aside.
In the same pot, add minced garlic and sauté for about 30 seconds to a minute, until fragrant. Be careful not to burn it.
Pour in the chicken broth, scraping the bottom of the pot to remove any browned bits. This adds flavor to the dish.
Stir in the lemon juice and zest to the broth in the pot.
Return the chicken thighs to the pot, ensuring they are submerged in the liquid. Close the lid, set the valve to sealing, and select 'Manual' or 'Pressure Cook' mode for 12 minutes.
Once cooking is complete, allow for a natural release for 10 minutes, then carefully switch the valve to venting to release any remaining pressure.
Remove the chicken from the pot and let it rest for a few minutes. Optionally, you can switch the Instant Pot back to 'Sauté' mode to reduce the sauce for a thicker consistency.
Serve the chicken thighs drizzled with the sauce from the pot and sprinkle fresh parsley on top.
Notes
Serve with lemon slices and parsley for a fresh presentation.