Albert Barnes Commentary Ezekiel 4:10

"And thy food which thou shalt eat shall be by weight, twenty shekels a day: from time to time shalt thou eat it." — Ezekiel 4:10 (ASV)

meat - A general term for food, which in this case consists of grain. Instead of measuring, it was necessary in extreme scarcity to weigh it (Leviticus 26:26; Revelation 6:6).

Twenty shekels a day - The shekel contained about 220 grains, so that 20 shekels would be about 0.56 of a pound.

From time to time - You will receive and eat it at the appointed interval of a day.