Make prawns: in a large bowl, toss prawns with cumin, paprika, garlic powder, onion powder, and season with salt and pepper. In a large pan over medium-high heat, heat 1 tbsp olive oil. Add prawns and cook until opaque and charred.
Make corn salad: in a medium bowl combine corn, pepper, and coriander. Add 1 tbsp olive oil, juice of half a lime, and season with salt and pepper.
Build bowls: divide rice between 4 bowls. Top with prawns, corn salad, and ¼ avocado each. Garnish with coriander, squeeze with lime and serve.
