Place the oil in the Instant Pot and select “Sauté”. Then add the chicken leg quarters and cook for about 4-5 minutes.
With a slotted spoon, transfer the chicken leg quarters to a plate.
In the Instant Pot, add crushed cherry tomatoes with all juice, garlic, oregano, red pepper flakes, and salt and cook for about 1 minute, scraping up the brown bits from the bottom.
Add cooked chicken and broth.
Secure the lid and cook on high pressure for 14 minutes.
Do a quick release.
Remove the lid and select “Sauté”.
Stir in olives and basil and cook for about 5 minutes.
Serve and enjoy :)
Video
Notes
If there's any burn alarm, add some more broth to it.
You can also use self marinated overnight kept Chicken. This will turn into more soft, more tender, and more juicy chicken after being cooked.