In a bowl, mix the cumin, coriander, paprika, garlic powder, onion powder, salt, and pepper. Add olive oil and stir to create a marinade.
Coat the chicken thighs with the marinade and let them sit for at least 10 minutes to absorb the flavors.
Preheat the air fryer to 200°C (390°F). Place the marinated chicken in the air fryer basket and cook for 15 minutes, flipping halfway through until golden brown and cooked through.
While the chicken cooks, prepare the yogurt sauce by mixing the yogurt, lemon juice, and chopped mint in a small bowl. Season with salt to taste.
Once the chicken is done, serve it hot with the yogurt sauce on the side for dipping.