Freaky Fast Fajitas

Ingredients

• 1 teaspoon kosher salt, plus more, to taste
• 1 teaspoon ground cumin
• 1 teaspoon chili powder
• 1 teaspoon smoked paprika
• 1 teaspoon granulated sugar
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1/2 teaspoon black pepper
• 1 tablespoon fresh lime juice
• 2 tablespoons canola oil, divided
• 1 (1-pound) skirt, flat iron, or flank steak, sliced into 1/4-inch-thick strips
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 yellow onion, thinly sliced
• 8 flour tortillas, warmed
• lime wedges, to taste
• scallions, to taste, sliced
• avocado, to taste, chopped
• cilantro leaves, to taste