Whisk together chicken marinade ingredients and marinate chicken for 15 minutes.
Grill, or cook in a non-stick sprayed skillet until done, then let chicken rest for 5 minutes.
Cut into slices.
For the dressing
Bring vinegar to a boil in a small saucepan.
Turn off the heat, then add <g class="gr_ gr_3127 gr-alert gr_gramm Grammar only-del replaceWithoutSep" id="3127" data-gr-id="3127">in the sugar and stir until dissolved. Let cool.
Combine with the rest of the dressing ingredients in a jar and shake to combine.
Assemble the salad
Divide lettuce and spinach between four plates.
Top with sliced chicken, salad dressing, and toppings.