Preheat oven to 425° F. Line a large sheet pan with parchment paper or foil for easy cleanup.
Slice the steak into thin strips against the grain. Cut bell peppers and onions into thin slices.
1 to 1.5 pounds skirt steak, 3 bell peppers, 1 large onion
Place steak, peppers, and onions on the sheet pan and drizzle with olive oil.
2 to 3 Tablespoons olive oil
In a small bowl, mix onion powder, garlic powder, cumin, chili powder, chipotle powder, oregano, salt, and pepper. Sprinkle seasoning evenly over everything and toss well to coat, then spread into an even layer.
1 teaspoon onion powder, 1 teaspoon garlic powder, 1 teaspoon cumin, 1 teaspoon chili powder, ½ teaspoon chipotle powder, ½ teaspoon dried oregano, ½ teaspoon black pepper, 1 teaspoon salt
Bake for 12 to 15 minutes, tossing/stirring halfway through, until the steak is cooked and the vegetables are tender. For extra char, broil for 2 to 3 minutes at the end.
Remove from oven and squeeze fresh lime juice over the top. Toss lightly before serving.
juice of 1 lime