Place coleslaw mix, red onion, cilantro, jalapeno, lime juice, 1 tablespoon olive oil, salt, and cayenne pepper in a large bowl. Stir until evenly combined. Set aside.

In a separate bowl combine shrimp, blackened seasoning, and the remaining 1 1/2 teaspoons olive oil. Stir until evenly combined.

Heat a large skillet over medium-high heat. Add shrimp mixture and cook until shrimp are bright pink on the outside and the meat is opaque, about 6 minutes, stirring halfway through.