Cut the onion and bell pepper into 1" pieces and place in a large bowl with the tomatoes. Toss the veggies with the 1 Tbsp of olive oil and spices before placing in the air fryer basket. Air fry for 10 minutes at 400ºF.
In the same bowl, add the diced chicken, remaining olive oil, Greek seasoning, and black pepper. Stir to fully coat the chicken.
After the veggies have cooked for 10 minutes, transfer to a clean bowl. Set aside.
Add the chicken to the air fryer basket and cook for 8 minutes at 400ºF.
After the chicken is cooked, add the veggies back to the basket and use the Foodi's broil function for 6-8 minutes or until the onion/peppers begin to slightly char and the tomatoes begin to wrinkle.
Serve with kalamata olives, crumbled feta cheese, parsley, rice, and lemon juice, if desired. (Not included in nutrition facts.)