For this recipe, I used Ken's Lite Caesar dressing to marinate the chicken. But honestly, you can marinate the chicken anyway you want to. I tend to use whatever I have in my refrigerator...
Butterfly the chicken breasts so they are thin. You can google this if you have not done it before. Butterflying helps to cook the chicken more quickly and evenly. Marinate in the Caesar dressing for 1 or more hours.
Cook on grill for 12 mins turning over after the first 6 mins. It's important to cook chicken throughly, so your cooking time may vary!
Place the arugula on your plates and the finished chicken breast on top!