Bring a large pot of water to a boil, and cooking the pasta as per the directions on the package.
Prepare the shrimp by make sure they are thawed out, deveined and tails taken off.
Place a large skillet or frying pan on medium-high heat. Add butter and olive olive in the skillet and cook the shrimp fully on both sides using the seasoning salt. Remove the cooked shrimp from the pan and onto a clean plate, reserve.
Drizzle a little more olive oil in the same skillet. Add the chopped Fresno pepper, garlic, and onion to the skillet and cook until onions are translucent.
Deglaze the pan with the can of canned tomatoes and its juices. Bring the sauce to a simmer and cook uncovered on low for 10-15 minutes to reduce the liquids.
Add back the cooked shrimp with the chopped parsley to the reduced sauce.
Drain the pasta and place it in the skillet with the sauce.
Stir everything together so that everything is covered in the sauce. Serve with more freshly chopped parsley.
Video
Notes
Fresno Peppers: These chili peppers are similar in heat as a jalapeno pepper. They are found in most larger grocery stores, but if you can't find any, simply replace with 1 teaspoon of dry chili flakes. If you want it less spicy, try starting with ½ tsp.