Whisk together margarita mix, tequila, orange juice, honey, garlic powder, onion powder, salt and pepper. Place chicken in a bowl (that has a lid) or a ziptop bag. Pour marinade over the chicken and move around to ensure it's fully coated. Marinate for at least 4 hours or up to overnight.
Preheat grill to medium heat (around 400 degrees). Once hot, place chicken on grill and cook for about 3 minutes per side, until the internal temperature reaches 165 degrees F.
Serve with Mexican rice and seasoned black beans if desired. Top with pico and tortilla strips.