chicken recipe easy

4 boneless, skinless chicken breasts - Salt and pepper, to taste - 1 teaspoon garlic powder - 2 tablespoons olive oil - 4 cloves garlic, minced - 1/4 cup chicken broth - 1/4 cup lemon juice (about 1 lemon) - 1/4 cup unsalted butter, melted - 1 tablespoon fresh parsley, chopped (optional)