Start by washing the shrimp and ensuring they are peeled and deveined. Pat them dry with a paper towel.

In a mixing bowl, combine cornstarch, salt, black pepper, garlic powder, and ginger powder. Mix until evenly blended.

Toss the shrimp in the cornstarch mixture until fully coated. Shake off any excess coating.

In a deep frying pan or wok, heat oil over medium-high heat.

Carefully add the shrimp to the hot oil in batches, ensuring not to overcrowd the pan. Fry for about 2-3 minutes until golden and crispy.

Remove the fried shrimp from the oil and place them onto a paper towel to drain.

Arrange the shrimp on a platter, and garnish with chopped green onions and chili peppers if desired.