Preheat the oven to 375°F (190°C).
In a small bowl, mix olive oil, lemon zest, lemon juice, garlic powder, onion powder, black pepper, and salt.
Brush the mixture generously over the chicken breasts.
Place chicken breasts in a baking dish and add chicken broth, if using, for extra moisture.
Bake for 25-30 minutes, or until the internal temperature reaches 165°F (74°C).
Remove from the oven, let rest for 5 minutes, and serve warm.