What happened??

I was making more macaron shells to finish off leftover fillings when this happened! The fullest shells I’ve ever had, but they’re wrinkled and cracked. I used the same recipe as my previous batch. This batter did seem grainier and darker than the previous batch. I remember my kitchen scale started to glitch as I was adding some ingredients, particularly the cocoa powder, so I’m wondering if that was inaccurately measured… but I’m not sure if there was another cause that I missed.