In a skillet on medium-high heat add butter (until it is melted). Add oregano, garlic, rosemary and thyme. Add the chicken and cook approximately 3-4 minutes on each side, until chicken is no longer pink (and 165 degrees). Remove the chicken and set aside on a dish.
Add zucchini to the pan and salt and pepper to taste. Sauté for approximately 2-3 minutes or until tender. Add the chicken back to the pan for approximately another minute or so and serve.