To marinate the chicken:
Add the Italian dressing, soy sauce, vinegar (optional), honey, Dijon mustard, minced garlic, honey, dried basil, dried oregano, onion powder, salt, and pepper to a mixing bowl. Whisk until the ingredients are well combined.
Place the chicken breasts in a shallow dish or a resealable plastic bag. Pour the marinade over the chicken, making sure that it’s evenly coated.
Seal the bag or cover the dish, and then refrigerate the marinated chicken for at least 30 minutes, but preferably for a few hours or overnight.
When you’re ready to cook the chicken, remove the chicken breasts from the marinade and discard any excess marinade.
For grilling the chicken:
Preheat a grill pan on the stove over medium high heat. Lightly oil the grill pan to help prevent sticking.
Once the grill pan is hot, use a pair of heat resistant tongs to carefully place the marinated chicken breasts onto the pan. Leave some space between each chicken breast to allow for air circulation.
Cook the chicken breasts for about 6 to 8 minutes on each side, or until they are fully cooked through and the internal temperature of the chicken reaches 165°F, as measured by an instant read meat thermometer.
Remove the grilled chicken breasts from the grill pan and let them rest for a few minutes before serving to allow the juices to redistribute.