Pour olive oil on the bottom of your Instant Pot Pan and set it to the saute setting.
Add onions and garlic. Cook until the onions are translucent. Unplug Instant Pot.
Add oregano, dillweed, Greek seasoning, and lemon juice. Followed by chicken, potatoes, chicken broth, and spinach.
Stir the spinach into the broth.
Secure Instant Pot and Cook on high pressure for 15 minutes.
Let Naturally release. Add Kalamata Olives to each individual bowl right before eating.