Heat a large skillet over medium-low heat until warm, about 3 minutes. Add shrimp, garlic, and crushed red pepper all at once and stir together. Add seafood seasoning, salt, and black pepper. Mix everything together.
Cook over medium heat until shrimp are fully cooked, 3 to 5 minutes. Pour lemon juice into skillet and stir again. Reduce heat to low; add parsley and lemon zest. Transfer only shrimp to a serving platter.
