01 - Set the oven to 425°F and line a large baking sheet with parchment paper or foil.
02 - Combine steak strips with olive oil, lime juice, chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and pepper in a large bowl. Toss until evenly coated. Allow to marinate 10 minutes, or up to 1 hour refrigerated for enhanced flavor.
03 - Toss sliced bell peppers and red onion with olive oil, kosher salt, and black pepper in a separate bowl until evenly coated.
04 - Arrange the vegetables evenly on the prepared baking sheet. Lay the marinated steak strips atop the vegetables in a single layer.
05 - Place the baking sheet in the oven and roast for 15 to 20 minutes, stirring once halfway through, until the steak reaches desired doneness and vegetables are tender with slight charring.
06 - Remove from oven and serve immediately with warm tortillas and preferred toppings such as cilantro, lime wedges, avocado, and sour cream.