Delicious and zesty chili-lime shrimp fajitas

Ingredients

• 1 lb large shrimp, peeled and deveined
• 2 tablespoons olive oil
• 2 tablespoons chili powder
• 1 teaspoon cumin
• 1 teaspoon paprika
• 1/4 cup fresh lime juice
• 2 cloves garlic, minced
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1 yellow onion, sliced
• 8 small flour tortillas
• Salt and pepper to taste
• Optional toppings: avocado, sour cream, cilantro, salsa