In a bowl, toss the shrimp with Cajun spice mix, ensuring they are evenly coated.
Heat olive oil in a large skillet over medium-high heat. Add the seasoned shrimp and cook for about 2-3 minutes on each side until they are pink and opaque. Remove from heat.
In the same skillet, add the sliced red bell pepper and sauté for 2-3 minutes until they are slightly softened, then mix them with the cooked shrimp.
In a small bowl, combine sour cream and lime juice, mixing well to create a creamy sauce.
Warm the corn tortillas by placing them in a dry skillet over medium heat for about 30 seconds on each side.
Assemble the tacos by placing a generous portion of the shrimp and bell pepper mixture on each tortilla. Top with shredded lettuce, avocado slices, and a drizzle of the sour cream lime sauce.
Garnish with fresh cilantro.
Notes
Serve the tacos on a vibrant platter with lime wedges on the side for an extra pop of color. Add a sprinkle of extra Cajun seasoning over the top for visual appeal.