Season the chicken thighs with salt and pepper.
Heat a 6-qt Instant Pot to Sauté and add 2 tbsp of avocado oil.
Once it indicates that that pot is "hot" add the chicken thighs and brown on both sides for 3 minutes each. Remove from the pot and set aside.
Add onions and garlic to the Instant Pot and cook for 3 minutes.
Pour in bone broth. Use a wooden spoon to deglaze the pot and scrap up the browned bits on the bottom.
Select the "Cancel" function and add the rest of the ingredients, except chicken and olives, and stir together.
Place the chicken thighs in the sauce.
Secure the lid, make sure the pressure valve is set to "Sealing."
Cook on Manual for 10 minutes, and let it naturally release pressure for 10-15 minutes.
Stir in kalamata olives, if using, and taste to adjust season.
Serve over cauliflower rice, rice, gluten free pasta, zoodles, spaghetti squash, or enjoy alone!