In a mixing bowl, combine the peeled and deveined shrimp with the Cajun seasoning and olive oil. Toss the shrimp until they are evenly coated with the seasoning mix.
Heat a large skillet over medium-high heat until hot. Carefully add the seasoned shrimp to the skillet in a single layer. Cook the shrimp for about 2-3 minutes on each side, or until they turn a vibrant pink color and are opaque throughout. Once cooked, remove the shrimp from the heat and set aside.
In a separate bowl, prepare the zesty slaw by combining the green cabbage, red cabbage, grated carrots, chopped cilantro, and finely chopped jalapeño (if using). Squeeze in the lime juice and add a pinch of salt. Toss the mixture thoroughly until all ingredients are well combined and the slaw is coated in lime juice.
To warm the tortillas, place them in a dry skillet over medium heat, or you can warm them directly over a gas flame for a few seconds on each side. This will make the tortillas soft and pliable.
To assemble the tacos, take a warmed tortilla and place a few pieces of the cooked Cajun shrimp in the center. Top the shrimp generously with the zesty slaw mixture, ensuring each taco is filled with vibrant flavors.
Serve the tacos immediately, garnished with extra lime wedges and fresh cilantro for an added burst of freshness, if desired.
Notes
Serve the tacos on a colorful platter with lime wedges and extra chopped cilantro for garnish.