Set your pressure cooker to the saute setting. Add olive oil, celery, onions, and garlic. Saute until the celery and onions become translucent.
add the rest of the ingredients into your pressure cooker pot in no particular order.
Close pressure cooker lid and cook on high pressure for 15 minutes. Let NPR for 10 minutes.
Remove lid. Turn on saute setting for about 5-8minutes and stir to thicken the chili a bit. You might want to add a little cornstarch if you are having problems with it.
Place the chicken at the bottom of your slow cooker. Add the rest of the ingredients.
Cook on low for 4-6 hours.
Serve