1. Preheat and Prep:
Preheat your oven to 400°F (200°C). Thinly slice the flank steak, bell peppers, and onion, and place them in a large mixing bowl.
2. Season the Mixture:
Drizzle the olive oil over the steak and vegetables and toss to coat. In a small bowl, combine all the spices (chili powder through black pepper). Sprinkle the spice blend over the meat and veggies and toss again until everything is evenly and thoroughly coated.
3. Roast on the Pan:
Arrange the seasoned steak and vegetables in a single, even layer on a large, rimmed sheet pan. This ensures everything roasts instead of steaming.
4. Cook:
Place the pan in the preheated oven and roast for 20-25 minutes, or until the steak is cooked to your desired doneness and the peppers and onions are tender and slightly caramelized at the edges.
5. Serve:
Remove the pan from the oven and immediately drizzle the fresh lime juice over everything. Serve hot with warm tortillas and your favorite toppings.
