In a large bowl, whisk white vinegar with smoked paprika, Mexican oregano, minced garlic, cumin and onion powder to form a paste.
Stir in salt, garlic powder, and chili powder.
Whisk in lime juice and avocado oil.
Add chicken and using tongs, cover chicken completely with marinade.
Cover and refrigerate minimum 1 hour.
Preheat BBQ to 375℉.
Place chicken thighs on BBQ.
Close lid and allow to cook about 6-7 minutes.
Flip chicken thighs and cook additional 4-5 minutes or until the chicken thighs reach an internal temperature of 165℉.
Place chicken on a plate and top with the chopped cilantro.
Serve hot in tacos or over rice.