Heat the oil in a pan over medium heat. Add the crushed bird's eye chilies and garlic, and stir-fry until fragrant.

Add the shrimp, squid, and scallops, and stir-fry until almost cooked. Add water and mix well. Season with seasoning powder, oyster sauce, and sugar. Stir-fry until everything is well combined and fully cooked.

Add the prepared spaghetti and stir-fry to combine. Add the sliced chili, green peppercorns, and basil leaves, and stir-fry again until well mixed. Serve on a plate.