Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The chameleon in a dream is a man of war or strife. It indicates a fickle man who does not remain in one state.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The chameleon indicates a magician or a hypocritical man. Killing it indicates victory over a magician.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The chameleon is interpreted as a man of bad character who strives for strife.