Prepare the marinade by mixing all ingredients in a bowl. Make sure it is salty enough or the grilled chicken salad will taste bland.
Place the chicken breasts into the marinade and let it sit in a cold place for at least 30 minutes.
Prepare the salad now. Simply cut and slice all the vegetables and put them into a large bowl. Cut the Feta cheese into small chunks and add those too.
Add a bit of olive oil, lime juice plus salt and pepper to taste. Mix everything properly and let it chill in the fridge.
Start grilling the meat. It needs about 5 minutes per side, then 2-3 minutes on the edges and final 2-3 minutes on the thicker end of the breast.
If you have a thermometer, aim for 73-75C or 160-165F internal temperature.
Make the dressing now. Simply whisk all the ingredients in a small bowl. To give the flavors some time to combine, let the dressing chill in the fridge for a few minutes.
When serving this grilled chicken salad, I start with a base of salad, slice chicken breast goes atop of it and all is finished with a solid amount of the honey & mustard dressing.