Turn pressure cooker to Saute and add the oil. Quickly brown the chicken for about 1-2 mins per side. Do one pc of chicken at the time. Remove to a plate.

Add the onions and fry for 3-4 mins until just browning on the edges then add the garlic, cook for 2 mins.

Add the chicken stock and "deglaze" the bottom of the pot then add olives, limes and the tomatoes & Harissa heat until simmers. Add back the chicken. Put on lid and pressure cook for 12 mins on high. Allow to naturally pressure release.