It is narrated from Sayyiduna Thabit bin Zayd al-Ansari (may Allah be pleased with him) that a roasted lizard was brought to the Prophet (peace and blessings be upon him). He (peace and blessings be upon him) took a stick and began counting on his fingers, then said: "A nation of the Children of Israel was transformed into creatures of the earth, and I do not know which creature it is." So he (peace and blessings be upon him) did not eat any of it, nor did he forbid it.
Hadith Referenceالمعجم الكبير للطبراني / باب الثاء / 1353