In a large bowl, combine the chicken thighs with Greek yogurt, crushed garlic, crushed ginger, red chilli flakes, cumin powder, meat masala, Kashmiri chilli powder, salt, and crushed pepper. Mix well to ensure the chicken is evenly coated.
Cover the bowl and let the chicken marinate in the refrigerator for at least 30 minutes, or ideally for 2-4 hours for maximum flavor.
Preheat your air fryer to 375°F (190°C).
Lightly spray the air fryer basket with cooking oil. Arrange the marinated chicken pieces in a single layer in the basket, ensuring not to overcrowd it. Cook in batches if necessary.
Air fry for 15-20 minutes, flipping the chicken halfway through, until golden brown and cooked through. The internal temperature of the chicken should reach 165°F (74°C).
Once cooked, remove the chicken bites from the air fryer and serve hot with your favorite chutney or dip.