Whisk together Worcestershire Sauce (1/4 cup) and Extra-Virgin Olive Oil (1/4 cup) a bowl or in a vessel in which you plan on using to marinate the steaks.
Liberally sprinkle T-Bone Steak (2) on both sides with Lemon Pepper (to taste) if the lemon pepper is salt-free. If it contains salt, don't add until the last step.
Place steaks into bowl with marinade or into ziplock bag and submerge with marinade. Let sit for 20 minutes and up to 24 hours.
Just before grilling, remove steaks from marinade and place on a plate. Discard marinade. Season steaks on both sides lightly with Kosher Salt (to taste) — Worcestershire sauce is salty, so you just need a light sprinkling here.
Fire up the grill. Grill for a few minutes on each side until a thermometer registers 130 degrees F (54 degrees C) for medium-rare or 140 degrees F (60 degrees C) for medium.