In a bowl, mix the whole wheat flour, garlic powder, paprika, cumin, salt, and pepper.
Coat the chicken thighs in the flour mixture, ensuring they are evenly covered. Drizzle olive oil over the coated chicken.
Preheat the air fryer to 200°C (390°F). Place the chicken in the air fryer basket and cook for 20 minutes, flipping halfway through until golden brown and cooked through.
While the chicken is cooking, prepare the spicy tahini sauce by whisking together tahini, lemon juice, water, and chili flakes in a bowl until smooth. Adjust the water for desired consistency.
Once the chicken is done, serve it hot with the spicy tahini sauce drizzled on top or on the side.