Remove the steak from the refrigerator 10–20 minutes before cooking to come to room temperature.
Pat the steak dry with paper towels and place it on a plate or baking sheet.
Season both sides of the steak liberally with sea salt, black pepper, and garlic powder.
Clean the grill grates with a wire brush, then preheat the grill to high (about 500°F for gas grills). For charcoal, arrange coals to allow direct and indirect heat.
Sear the steak directly over high heat for 2–3 minutes per side, until you see grill marks.
Sear the fat edges of the steak by holding them against the grill with tongs until crispy.
Check doneness with a meat thermometer: 125–130°F for medium-rare, 135–140°F for medium; remove a few degrees early to allow for carryover cooking.
Let the steak rest at least 10 minutes before slicing so the juices redistribute.
Slice and serve with your preferred side dishes.