1
Combine the steak, olive oil, lime juice, Worcestershire sauce, and half the fajita seasoning in a large bowl. Let the steak marinate for at leats 15 minutes, up to 2 hours.
2
Preheat the grill over medium-high heat. Make sure the grill grates are clean. Add the steak. Cook for 3-4 minutes until lightly browned and seared on the bottom. It should easily be released from the grill. Flip and cook for 3-4 minutes until the steak is cooked to medium-rare/medium. Cook longer if desired or if needed for thicker cuts of steak. Do not overcook or the steak can be tough. Remove and tent with foil.
3
Drizzle the peppers and onions with olive oil or cooking spray. Season the peppers and onions with half the fajita seasoning. Cook for 4-6 minutes per side (longer for softer veggies) until the veggies are tender-crisp and lightly charred. The peppers may cook more quickly than the onions, remove them earlier if needed.