In a bowl or a measuring cup, whisk together lime juice, tequila, olive oil, cilantro, chili powder, honey, garlic powder, salt, and pepper.
Place chicken in a zip-top bag or a baking dish and pour marinade over, moving chicken around to coat on all sides. If using a bag, put the bag into a bowl to prevent leaks spilling in your fridge. If using a baking dish, cover with plastic wrap.
Place in fridge and marinate for 30 minutes to 4 hours. When ready to cook, remove from marinade and grill over medium heat (350°F) for 15-20 minutes or until internal temperature reaches 165°F on an instant read thermometer, flipping once. Cooking time will vary depending on thickness of meat and exact grill temperature.
Nutrition information calculated for only half of marinade since much of it is discarded.