Is it normal that my chocolate powder is not sifting through my shaker very well?

Yes, totally normal. The panela in the chocolate powder (as it's completely natural) is not as fine as the overall particles within the chocolate powder. So when used in a very fine shaker, this is exactly what can occur.

We suggest using a shaker with slightly larger holes in the lid (available on our portal) and keeping them away from steam wands or humid spots to prevent clumping.