If it is wormy chestnut, I don't know if the worms came because of the blight or if the worms are naturally in the wood or ?? Is it a bug that left the holes or tracks in the wood?
Any how it will be interesting to see a piece turned. I googled wormy chestnut bowl, and there several pictures. So maybe it turns ok. If you cut across or along a worm hole, it may have some interesting character to the looks.