Combine salt, pepper, paprika, thyme, and onion powder. Season both sides of the chicken thighs. Put olive oil in Instant Pot and select SAUTE on HIGH.When oil is hot, place chicken thighs in Instant Pot.
Cook on each side for three minutes. Remove chicken and set aside. Add onions and garlic to the Instant Pot. Cook for three minutes.
Add chicken stock and continue cooking. Using a wooden spoon, frequently scrape the bottom to break the brown pieces loose.
When mixture comes to a boil, press CANCEL to turn it off.
Add potatoes and chicken. Cover and select PRESSURE COOK HIGH for 8 minutes.
When done, allow Instant Pot to naturally release for 5 minutes and then quick release.