01 - Remove steaks from the refrigerator 20 minutes before cooking to bring to room temperature. Pat dry with paper towels.
02 - Season both sides of the steaks with salt and black pepper, pressing gently to adhere.
03 - Heat 1 tablespoon olive oil in a heavy skillet, preferably cast iron, over high heat until just smoking.
04 - Sear steaks for 3-4 minutes per side for medium-rare, or until desired doneness. Use tongs to sear the edges for 30 seconds each.
05 - Transfer steaks to a plate, tent loosely with foil, and let rest for 5 minutes to allow juices to redistribute.
06 - In a bowl, combine parsley, oregano, garlic, red pepper flakes, vinegar, olive oil, salt, and pepper. Mix well until fully incorporated.
07 - Slice steaks against the grain. Spoon chimichurri generously over the steak and serve immediately.