In a large bowl, combine the shrimp, olive oil, chili powder, cumin, garlic powder, onion powder, paprika, salt, and black pepper. Toss until the shrimp are well coated. Let marinate for 15-20 minutes.
Heat a large skillet over medium-high heat. Add the marinated shrimp and cook for 2-3 minutes on each side until they are pink and opaque. Remove the shrimp from the skillet and set aside.
In the same skillet, add the sliced bell pepper and onion. Sauté for about 5-7 minutes until they are tender and slightly charred.
Return the shrimp to the skillet with the vegetables and toss to combine. Cook for an additional minute to heat through.
Warm the flour tortillas in a separate skillet or microwave.
Serve the shrimp and vegetable mixture in the warm tortillas, garnished with fresh cilantro and lime wedges on the side.