Add the chili powder, kosher salt, paprika, cayenne pepper, cumin and shrimp in a small bowl and mix well.
Add 1 tablespoon of the canola oil to a large skillet on medium high heat then add the shrimp to the skillet and cook until 1 minute on the each side then remove from the pan.
Add the rest of the canola oil and the onions, bell peppers and garlic to the pan and cook for 4-5 minutes.
Add the shrimp back to the pan and squeeze half the lime wedges over the pan before serving.
Notes
Note: click on times in the instructions to start a kitchen timer while cooking.