Yucca chips?

Hi, has anyone tried Yucca chips? Im on a continual low carb diet, and after 5 months im pleased to say its working really well. Heres a question though..i had a portion of Yucca chips this evening whilst out for a meal..i was told it was a plant and made lovely chips.. so i thought i would give them a try..(im Type 2)..my sugars did go up to 8.0..which considering everything, i didnt think too bad as a treat, so, has anyone else tried these? Im confused as if you look at the carb content (which i did as soon as i got home) they are supposed to be worse than potatoes, which i never have. If anyone has any info or experiences on these that would be lovely? Helen