Combine all ingredients except for the chicken in a large bowl and stir well to combine.
1 cup plain whole milk yogurt, 1 tablespoons olive oil, 1 tablespoon garam masala, 2 tablespoons garlic paste, ½ tablespoon ground ginger, 1 teaspoon crushed red pepper flakes, 1 teaspoon sea salt, ½ teaspoon ground black pepper
Add in the chicken thighs and toss to coat. Spoon the yogurt mixture over the chicken to make sure all is covered.
12 boneless, skinless chicken thighs
Cover and marinate in the refrigerator for 2-4 hours.
Coat the grates of a grill (or a grill pan) with oil. When ready to cook, heat the grill or grill pan to medium-high heat (375-450°F).
Remove the chicken from the yogurt marinade, but do not pat dry. Grill each chicken thigh for 5-6 minutes per side, or until the internal temperature reaches 165°F.