Heat the oil in a large skillet over medium-high heat. Add the garlic, pepper and shrimp. Cook for about 2 minutes, stirring constantly, just until the shrimp turn pink. Increase the heat to high. Add the lemon juice, sherry, hot red pepper, and salt to taste and bring to a boil.
Serve immediately, sprinkled with parsley. The total cooking time shouldn't be more than 5 minutes. Serve over rice with a salad for a delicious, quick meal.