In a small bowl, add oil, shawarma spice blend, pepper, salt, and mix to combine. Add beef, peppers, and onions to oil mixture, and toss to coat evenly.
Assemble skewers in following order (dividing ingredients evenly): beef, peppers, onions.
Place crisper plate in the Small Batch Container, then place skewers on top in a single layer.
Attach CRISPi PowerPod to container, press MODE until AIR FRY illuminates, set time to 7 minutes, and press START to begin cooking.
When 3 minutes remain on the timer, remove PowerPod and use silicone‑tipped tongs to gently flip skewers. Replace PowerPod and press START to resume cooking.
Cooking is complete when internal temperature of beef reaches at least 145°F on an instant‑read thermometer. Add additional cooking time if needed.
When cooking is complete, serve immediately with tzatziki sauce and pita bread if desired.
