Mexican Pollo Asado/Mexican Marinated Chicken

2 lb boneless skinless chicken thighs

Marinade:
1 bunch of cilantro (after I made this I realized that I could have used 1/2 this amount of cilantro.)
juice of 2 oranges
juice of 2 limes
2 packets of Sazon seasoning Goya
(con culantro y achote) (coriander & annatto)
1 tbsp white wine vinegar
1/2 tsp salt
1/2 tsp pepper
1/2 onion
1/4 cup olive oil
*cook approximately 5 to 6 minutes on each side.*