Combine spices in a small dish. Sprinkle seasonings over tilapia filets, season with salt and pepper, rubbing the spices into the fish.
Heat a large cast iron skillet to medium high heat with a drizzle of olive oil. Add minced garlic and saute for about 20 seconds, then add in your tilapia filets. Careful not to add too many and crowd your pan, I cooked just 2 filets at a time. Once you add your fish, don't move them around, let them really sear. Cook for 2-3 minutes, then flip and cook another 2 minutes or so. Check to be sure fish is completely cooked (fish will be completely white and flaky throughout). Remove to plate and repeat with additional fish filets. Sprinkle fish with lime zest.
Add a drizzle of olive oil, corn, red onion and red bell pepper to the same skillet. Cook for 1-2 minutes without stirring to allow them to roast and sear. Then stir and let them cook again another couple minutes until vegetables are tender and caramelized.
Add in drained and rinsed black beans and heat for 1 minute.
Add 1/3 to 1/2 cup cilantro lime rice to a bowl and top with the corn/beans/pepper mixture, pieces of blackened fish, and any toppings you desire.
** Additional toppings could include shredded cheese, sour cream, chopped tomatoes, salsa, or pico de gallo.** Additional ways to serve would be laid out on a plate, mixed together in a bowl, in a soft taco, on a salad, or with shrimp, chicken or pork.