Shoes. Literally, things tied on; i.e; sandals, attached with straps to the sole of the foot. Clouted, i.e; patched. The intensive Pual suggests that they were very much patched. The participle Kal is translated "spotted" in Genesis 30:32, Genesis 30:33, Genesis 30:35.
Mouldy. נִקֻּדִים literally, marked with points, i.e; mildewed, Provision צֵידָם. "Proprie vendtionem" (Vatablus). "Panis enim mucidus punctis respersus est albis viridibus et nigris" (Rabbi David, in libro Radicum).
So the LXX; Theodotion, and Luther. This gives a better sense and more according to the derivation than the interpretation crumbs of bread, given by Gesenius and Keil, after Aquila, Symmachus, and the Vulgate, which has "in fustra comminuti."
The cracknels (the same word in Hebrew as here) in 1 Kings 14:3 were probably biscuits marked with points by a sharp pointed instrument, in the same way as the Jewish passover cakes are at the present day.