Coat the chicken in ⅓ cup of chimichurri sauce, and marinate for at least 30 minutes. Remove chicken and discard marinade.
Preheat grill and grill chicken, skin side down for 6 - 8 minutes. Turn chicken over and grill 4 - 5 minutes, until internal temperature reaches 165 degrees.
Serve with additional chimichurri sauce.
Notes
You can make the chimichurri sauce the day before and marinate the chicken thighs overnight.