To make this chicken, start by preheating your grill to 500°F.
Next, prepare the chimichurri. Wash and chop the parsley and set it aside.
Then finely chop the oregano, garlic, shallot, and serrano pepper.
Add everything to a medium bowl.
Add salt, black pepper, red pepper flakes, olive oil, and red wine vinegar to the bowl. Mix well and set aside.
Place the chicken thighs in a separate bowl.
Pour half of the chimichurri over the chicken and toss to coat. Reserve the remaining chimichurri for serving.
Let the chicken marinate for 30 minutes.
Once the grill is hot, place the chicken on the grates.
Cook undisturbed for 6-7 minutes. Flip and cook for another 6-7 minutes, or until the internal temperature reaches 165°F.
Note: If the chicken sticks to the grill, it’s not ready to flip yet.
Remove from the grill and serve with the reserved chimichurri. Enjoy!