Bring a medium pot of salted water to the boil and cook the pasta according to package directions. Drain and set aside.
Meanwhile, place the shrimp into a ziploc bag and add in the cajuns seasoning and oil. Stir through the bag to completely coat the shrimp with the spices.
Heat a large rimmed pan over medium heat. Add the shrimp and cook until pink and opaque, about 2-4 minutes. Set aside.
To the same pan add 1 tbsp of oil and saute the garlic for 1 minute.
Stir in the onion, bell peppers and cook for 3-4 minutes, or until veggies soften.
Stir in the cajun seasoning plus chili powder, and cook for 1 minute more, or until fragrant. Add the crushed tomatoes, juice and lime zest. Season with salt and pepper to taste.
Simmer for about 5 minutes to allow the flavors to mild.
Stir in the cooked pasta and the shrimp, and top with grated parmesan and chopped parsley.
Notes
Use any pasta of choice. For a healthier option, use lentil or chickpea pasta.
You may use fresh tomatoes, or make your own crushed tomatoes instead of canned tomatoes.
Shrimp: use raw shrimp if you can use cooked shrimp. If you don't like shrimp, use a different protein like chicken breast.
Cook the pasta to al dente since it will be cooking again along with the shrimp and sauce. Do not overcook the pasta.
Store leftovers in an airtight container and store in the fridge for up to 3 days.