Finely grate 1/2 of a red onion. Transfer that to a mixing bowl.
Finely slice the rest of the onion. Place that in a small bowl with the lemon juice and sumac. Set aside.
Add the ground chicken to the mixing bowl with the grated onions. Add the cumin, paprika, garlic powder, oregano, salt and pepper. Mix well.
Spread 1/4 of the mixture onto a piece of parchment paper. Cover with another piece of parchment and roll out the chicken mixture as thin as you can get it. Then remove the top piece of paper and roll the meat up like a fruit roll. Continue with the other 3 parts to make 4 rolls.
Spread the rolls out in the air fryer so they aren’t overlapping. Cook at 350°F(175°C) for about 10 minutes to make sure the chicken cooks all the way through.
While the chicken is cooking, mix together the Greek yogurt, lemon juice, garlic, and olive oil in a mini food chopper or processor. Blend until smooth.
Heat the lavash on a skillet until pliable. Spread on some of the garlic sauce. Add lettuce, tomato and some of the sliced sumac red onions.
Remove the chicken wraps from the air fryer. Unroll them. Add the meat to the wrap. Top with additional garlic sauce. Fold the end up and roll tightly.
Lightly toast on the grill for 2-3 minutes per side before serving.