Season the skirt steak with kosher salt and black pepper. Let it rest at room temperature for 15 minutes.
Prepare chimichurri sauce by blending parsley (or cilantro), garlic, vinegar, and olive oil until smooth.
Heat a cast iron skillet over high heat for five minutes. Add oil and sear the steak for approximately three minutes per side until it reaches an internal temperature of 125°F – 130°F.
Allow the steak to rest for 5 to 10 minutes before slicing against the grain into thin strips.
Assemble bowls starting with a base of fluffy white rice, topped with sliced skirt steak and drizzled generously with chimichurri sauce. Garnish with optional toppings.