In a large bowl, mix all ingredients, except the chicken, until well combined. Separate some for serving later.
Use paper towels to dry the wings, and then add to the marinade. Cover and place in the fridge to marinate for 2–3 hours.
Heat grill to medium, and cook the wings on indirect heat. Turn the wings occasionally to cook well on all sides.
Garnish with more chimichurri sauce and jalapeño.
