Kit Kat Chunky Bar. The natural step up from the traditional Kit Kat the Nestle Kit Kat Chunky takes the original recipe and simply increases the scale creating a hearty chocolate bar that is guaranteed to satisfy even the most ravenous consumer.This hefty treat is perfect for Kit Kat lovers looking for something a bit more substantial. Whilst the original Kit Kat is perfect for snacking on between meals this chunky bar is arguably a meal in itself...Allergy Advice Contains Wheat Contains Milk Contains Soya. Free From Artificial Colours Free From Artificial Flavours Free From Artificial Preservatives. Suitable for Vegetarians.