In a small bowl, combine salt, pepper, chili powder, garlic powder, onion powder, cumin and smoked paprika.
Heat 1 tablespoon of olive oil over high heat in a 12 inch cast iron pan.
Add onions and bell peppers and 1/2 of seasoning mixture. Cook for about five minutes, or until onions and bell peppers are tender.
Push onions and bell peppers to the side of the skillet to make room for the shrimp.
Add remaining olive oil to skillet, followed by shrimp and remaining seasoning mixture.
Saute shrimp until pink and cooked through.
Squeeze juice from one fresh lime over skillet and sprinkle with chopped cilantro. Serve in warm tortillas.
Have shrimp, bell peppers and onions prepared before you start cooking. This recipe only takes a few minutes to cook and you want to have all the ingredients ready to go once you start cooking.