Easy Chicken Fajitas

Bahan-bahan (4 porsi)

• 3 boneless skinless chicken breasts (approximately 1 pound)
• 1 medium onion
• 1 lime
• 3 bell peppers (red, yellow, green or orange)
• 3 tablespoons olive oil (divided)
• 1 teaspoon chili powder
• ¾ teaspoon salt (divided, more to taste)
• ½ teaspoon smoked paprika
• ½ teaspoon onion powder
• ½ teaspoon black pepper
• ½ teaspoon cumin (optional)