Heat a large cast-iron skillet over medium-high heat. Coat the bottom with 1/4 inch olive oil. Add the garlic and crushed chiles to the oil and cook until the garlic starts to sizzle and is very aromatic, then add the shrimp. Cook until the shrimp turns pink, 1 to 2 minutes. Add the lemon zest and juice, then add the anise liqueur and carefully ignite. Cook until the flame subsides. Season with salt and serve with crusty bread to sop up the delicious olive oil!
Use extreme caution when igniting alcohol. Remove the pan from the heat source before adding the alcohol. Pour the alcohol into the pan and carefully ignite with a match or click lighter. Return the pan to the heat and gently swirl to reduce the flames.