Combine chopped cucumbers, tomatoes, parsley, onions and garlic in a mixing bowl. Set aside.
Wash the prawns and get rid of any impurities. Press to flatten and open in the middle
Pat dry and season with salt and pepper.
Heat 2 tbsp olive oil to high.
Fry the prawns in 2 batches cut side down for 3-4 minutes until opaque and browned on the sides.
If the prawns start to bend outwards, press them with a spatula.
If the edges are still somewhat raw, flip and fry for an extra minute on the back side.
Transfer to a serving plate cut side up.
Add 1 tbsp lemon juice, 1/2 tsp aji amarillo paste and 1/3 tsp salt to the tabbouleh salsa and mix everything together.
Top the shrimps with 1-2 generous scoops of salsa and add a couple more to the plate.
Serve immediately.