Preheat oven to 400°F. Line a baking sheet with parchment paper. Set aside.
Rub tilapia with olive oil, then sprinkle blackened seasoning on top side of fish, coating liberally.
Bake fish for 10 minutes, until the fish is cooked through. Allow to cool slightly while you make the crema.
To make the crema, blend all ingredients in a blender until smooth!
Heat the corn tortillas on a grill or in a microwave until warm. Fill tortillas with a few tablespoons of cabbage.
Break the tilapia up slightly with two forks. Place tilapia over cabbage, then add the charred corn, jalapeños, and cilantro. Finish with a healthy drizzle of crema!