For the Salmon:

• 1 pound salmon fillet, cut into 4 pieces
• 1 tablespoon olive oil
• 1 teaspoon chili powder
• 1/2 teaspoon cumin
• 1/4 teaspoon garlic powder
• 1/4 teaspoon onion powder
• Salt and pepper to taste

For the Cilantro Lime Crema:

• 1/2 cup sour cream
• 1/4 cup mayonnaise
• 1/4 cup chopped cilantro
• 1 tablespoon lime juice
• 1 clove garlic, minced
• 1/4 teaspoon chili powder (optional)
• Salt and pepper to taste

For the Tacos:

• 8 small flour tortillas
• Toppings (optional): chopped red onion, avocado, pico de gallo, etc.