In a large bowl, combine the plain yogurt, lemon juice, tandoori masala spice blend, ginger garlic paste, ground cumin, ground coriander, turmeric powder, paprika, and salt. Mix well to form a marinade.
Add the chicken thigh pieces to the marinade, ensuring they are fully coated. Cover the bowl and refrigerate for at least 2 hours, or overnight for best results.
Preheat the grill to medium-high heat. Thread the marinated chicken pieces onto the soaked wooden skewers, leaving space between each piece.
Grill the skewers for 5-7 minutes on each side, or until the chicken is cooked through and has a charred, slightly crispy exterior.