For the Cabbage Slaw: In a medium bowl, add the cabbage, red onion, cilantro, jalapenos, vinegar, oil, salt, ground black pepper, and mayonnaise, and toss well to combine and set aside.
To Warm the Corn Tortilla: Warm the tortillas in a skillet over medium-low heat or wrap in a damp cloth and microwave for 25 seconds. Wrap in a clean kitchen towel or aluminum foil to keep warm.
To Season the Fish: In a large bowl, add Tilapia and season with old bay seasoning, ground black pepper, and cayenne pepper, and toss well to combine. Set aside.
To Coat the Fish: In a shallow dish, whisk together the self-raising flour, cayenne pepper, black pepper, and old bay seasoning. Set aside