De-vein and peel shrimp and season with salt and pepper. Add broth to a large skillet and cook shrimp on medium high heat. Next add garlic and cayenne and cook for 4-5 minutes and toss. Cook until shrimp are pink.
Remove from heat and add lemon juice and parsley. Stir to coat the shrimps. Season with salt and pepper (if needed) and serve with lemon wedges.