Musannaf Ibn Abi Shayba 16:339

Abu Bakr narrated to us, he said: Zakariya narrated to us, from al-Sha’bi, from Ibn Umar, he said: I saw Umar, his mouth was watering. He said: I said, "O Commander of the Faithful, what is the matter with you?" He said: "I crave fried locusts."