2 teaspoons chili powder
1 teaspoon smoked paprika
1 teaspoon Mexican oregano
1 teaspoon salt, or to taste
1/2 teaspoon ground cumin
1/2 teaspoon garlic powder
1/4 teaspoon cayenne pepper, or to taste
1 green bell pepper, thinly sliced
1 red bell pepper, thinly sliced
1 onion, thinly sliced
3 tablespoons olive oil, divided
1 pound sirloin steak, sliced 1/4-inch thick across the grain
16 medium shrimp, peeled and deveined
1 lime, halved
1/2 cup fresh cilantro sprigs
8 (8-inch) flour tortillas
In a large bowl, combine green bell pepper, red bell pepper, and onion with 1 1/2 tablespoons olive oil and 1/2 of dry seasoning mixture. Toss until evenly coated with seasoning mixture and spread out in a single layer on one of the prepared pans.