Wash and slice potatoes about 1/4 inch thick. In a large bowl toss potatoes with a splash of oil, and a small amount of salt and pepper. Place potatoes on med. heat grill, and cook till tender. Cool to room temp. For the dressing combine garlic, zest, olive oil, lemon juice, honey and thyme. Whisk together, and toss into the potatoes. Taste, and adjust seasoning, adding more salt and pepper if necessary. Serve and enjoy.