For the Shrimp Fajitas:
Prepare the Shrimp: In a large mixing bowl, combine the shrimp with smoked paprika, ground cumin, chili powder, garlic powder, onion powder, dried oregano, salt, and pepper. Toss until the shrimp are evenly coated with the seasoning.
Cook the Vegetables: In a large skillet or cast-iron pan, heat 1 tablespoon of olive oil over medium-high heat. Add the sliced bell peppers and onions, and cook for about 5-7 minutes, or until the vegetables are tender and slightly charred. Remove the vegetables from the skillet and set aside.
Cook the Shrimp: In the same skillet, heat the remaining 1 tablespoon of olive oil over medium-high heat. Add the seasoned shrimp and cook for about 2-3 minutes on each side, or until the shrimp turn pink and opaque. Squeeze fresh lime juice over the cooked shrimp.
Combine: Return the cooked vegetables to the skillet with the shrimp and toss to combine. Cook for an additional 1-2 minutes, or until everything is heated through.
Serve: Serve the shrimp and vegetables on warm tortillas. Squeeze fresh lime juice over the top and garnish with chopped cilantro, if desired. Serve with your favorite toppings, such as salsa, guacamole, sour cream, and shredded cheese.