Melt butter in a medium to large skillet over medium heat.
Add garlic and cook for about 30 seconds. Add chicken broth and simmer.
Allow mixture simmer until reduced.
Add lemon zest and lemon juice to skillet.
Stir and add shrimp to skillet. Cook for a minute or two.
Flip the shrimp and cook for another minute or two.
Your shrimp are cooked when they are pink. Don't overcook or they will be tough. Serve with the sauce.