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If you are going to use any type of sharp object or one that is hard and can break teeth or cause choking you are going to need to write your own warning label as most labels are written specifically for the product.
The warning would state something to the effect of "WARNING: Food Item contains hard, sharp, non-edible object through the pickle and can cause choking hazard and or danger to teeth. Please remove the stick prior to biting all the way through pickle or exercise extreme caution when biting through pickle and take care to remove the skewer. Also, keep object away from small children as skewer can cause choking hazard or can become impaled on gums or mouth."
This is the type of warning you would use on your label, it is similar to labels on olives with pits or any other food item with a non-edible object in the item.
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