Place peppers and onion in the Actifry pan. Drizzle evenly with oil. Cook for 7 minutes.
Toss steak with garlic, chili powder, cumin, salt, and pepper. Add to the Actifry pan. Cook for 8 minutes or until steak is cooked to preferred doneness.
Spoon into tortillas and serve with lime wedges to squeeze over top. Garnish with fajita fixings as desired.