1 : Place the steak, garlic butter, and soy sauce in a medium bowl. Stir to combine and allow to marinate for at least 30 minutes.
2 : In a medium bowl, combine the shallot, jalapeno, parsley, cilantro, oregano, vinegar, garlic butter, olive oil, salt, and pepper and mix to combine. Allow to sit for 30 minutes.
3 : Preheat the grill on high for about 5 minutes. Once hot, turn down the heat to medium
4 : Pierce the steak, onion, and pepper with metal skewers, alternating between the meat, pepper, and onion pieces. If you are using wooden skewers, make sure to soak them in water for 1 hour before you assemble the kabobs.
5 : Place the kabobs on the grill for 3 minutes, then flip and cook the other side for 2 - 3 minutes.
6 : Plate the grilled kabobs and top with the chimichurri.