Prep the steak. Pat the steak dry with paper towels. Trim excess fat if needed.
Rub with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/2 teaspoon black pepper, and the soy or Worcestershire sauce. Let it sit at room temperature while you prep the veggies (10–15 minutes).
Prep the veggies. In a large bowl, toss broccoli, bell pepper, red onion, and zucchini with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/4 teaspoon black pepper, smoked paprika, garlic powder, onion powder, and Italian seasoning.
Preheat the air fryer. Set to 400°F (200°C) for 3–5 minutes. A hot basket helps create a better crust on the steak and caramelizes the vegetables.
Start the veggies. Add the seasoned vegetables to the air fryer basket in an even layer.
Cook at 400°F for 6 minutes, shaking the basket halfway through. This gives them a head start so the steak and veggies finish together.
Add the steak. After 6 minutes, slide the basket out, toss the veggies, and make space in the center. Place the steak on top or nestled between the vegetables in a single layer.
Cook to your doneness. Air fry at 400°F for 6–10 minutes, flipping the steak halfway.
For a 1-inch steak, plan on about 6–7 minutes for medium-rare, 8–9 for medium, and 10 for medium-well. Use an instant-read thermometer for accuracy: 125–130°F for medium-rare, 135°F for medium, 145°F for medium-well.
Rest and finish. Transfer the steak to a cutting board and rest for 5 minutes. Toss the vegetables for one final minute in the hot basket, if you like them extra caramelized. Top the steak with a small pat of butter and a squeeze of lemon.
Slice against the grain.
Serve. Plate sliced steak alongside the veggies. Sprinkle with fresh parsley and adjust salt and pepper to taste.