From a safety point of view it is fine to refreeze defrosted meat or chicken or any frozen food as long as it was defrosted in a fridge running at 5°C or below. You may have lost some quality in defrosting then refreezing as the cells break down a little and the food can become slightly watery. Another option is to cook the defrosted food and then divide into small portions and refreeze once it has stopped steaming.