Pat the shrimp dry with a paper towel. Season all over with salt, pepper, and paprika.
Heat the butter and oil in a large skillet over medium-high heat. Add the garlic and crushed red pepper. Cook, stirring constantly, until fragrant, about 30 seconds.
Add the shrimp, keeping them in a single layer if possible. Cook, stirring occasionally, until the shrimp is tender and opaque throughout, 3–5 minutes. Remove the skillet from the heat. Add the lemon zest and lemon juice, and sprinkle with the parsley. Serve immediately.
Video
Notes
Storage: Store leftovers in an airtight container in the fridge for up to 3 days.