Creating Grilled Lemon Herb Chicken is straightforward when you follow these simple steps:

1. Prepare the Marinade: In a bowl, whisk together lemon juice, olive oil, minced garlic, rosemary, thyme, Dijon mustard, salt, and pepper.
2. Marinate the Chicken: Place the chicken breasts in a zip-top bag or shallow dish. Pour the marinade over the chicken, ensuring it is well-coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes, preferably up to 1 hour.
3. Preheat the Grill: Heat your grill to medium-high heat. If using a charcoal grill, ensure the coals are ashy.
4. Remove Chicken from Marinade: Take the chicken out of the marinade and discard the excess marinade.
5. Grill the Chicken: Place the chicken on the grill, cooking for about 7-10 minutes on each side, until fully cooked and no longer pink in the center. Use a meat thermometer to ensure it reaches an internal temperature of 165°F (75°C).
6. Rest the Chicken: Once done, remove the chicken from the grill and let it rest for about 5 minutes.
7. Serve: Slice the chicken and serve with lemon wedges and a sprinkle of fresh herbs, if desired.

By following these steps, you will create an incredible dish that not only tastes amazing but also looks visually appealing.