01 - Preheat your oven to 425°F. Line a large rimmed baking sheet with parchment paper or foil for easy cleanup.
02 - In a large bowl, combine olive oil, lime juice, chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and black pepper. Add the steak strips and toss to coat evenly. Let marinate while you prepare the vegetables.
03 - Spread the sliced bell peppers and red onion evenly on the prepared baking sheet. Drizzle with a little olive oil and season lightly with salt and pepper.
04 - Arrange the marinated steak strips over the vegetables in an even layer, ensuring the meat contacts the pan for proper searing.
05 - Roast in the oven for 18-20 minutes, stirring halfway through cooking. Cook until the steak reaches your desired doneness and vegetables are tender with slight caramelization.
06 - Warm the tortillas in a dry skillet over medium heat or directly on the oven rack for 1-2 minutes until pliable and lightly toasted.
07 - Serve the steak and vegetables in warm tortillas. Top generously with fresh cilantro, a squeeze of lime, and your choice of sour cream, guacamole, salsa, or shredded cheese.