Pat the shrimp dry, then add them to a bowl with the chili powder, cumin and garlic powder. Season with sea salt and pepper, then mix well and set aside.
Heat a large cast iron skillet to medium heat high and add a splash of oil.
Add the sliced peppers and onions to the skillet and cook while tossing often. The veggies are done when they are warmed through, but still firm.
Remove the veggies from the pan and add the shrimp cook while tossing often until the shrimp have turned pink. This should only take a couple of minutes depending on the size of your shrimp
Serve the shrimp and veggies together, along with the flour tortillas and your favourite toppings.