In a medium bowl, mix together all the ingredients for the marinade (aside from the chicken).
Cut your chicken into strips and place in the bowl with the marinade or place it all in a large zipper bag. Allow to marinate for 30 minutes to a few hours.
Once its had a chance to marinate, put the chicken onto your wood skewers.
Preheat your BBQ to medium heat (around 350 degrees).
Ensure your grill is oiled or sprayed with cooking spray.
Place the skewers on the grill for about 5 minutes each side until there are grill marks and the chicken is cooked through.
While chicken is cooking, assemble the avocado purée. Place avocado, greek yogurt and salt and pepper in a bowl. Mash with a fork, then whisk to get a smooth consistency.
Serve avocado purée alongside the skewers.
Recipe by Busy But Healthy at https://busybuthealthy.com/spiced-chicken-skewers-on-avocado-puree/