Espresso aligns pilling like crazy

I have over 12 pairs of align leggings. I baby them like crazy. Only wear for Pilates/yoga and around the house. Gentle wash on cold hang to dry.

I purchased a pair of espresso aligns in January and have worn them maybe 6 times. They are pilling way more than any of my other aligns. It looks like I wore them and dragged my butt across the carpet. Has anyone else had any issues with their espresso aligns? Is this an issue with the new fabric?