Season the chicken breasts with salt and black pepper.
In a large skillet, melt the butter over medium heat.
Add the garlic and sauté until fragrant, about 1 minute.
Add the chicken breasts to the skillet and cook for 5-7 minutes on one side.
Flip the chicken and cook for an additional 5-7 minutes, until fully cooked.
Add the chicken broth, lemon juice, and lemon zest to the skillet.
Simmer the sauce for 2-3 minutes, allowing it to thicken slightly.
Garnish with chopped parsley before serving.