Brad said:How is your humidity? Lighting and temps?
I can't say for sure without seeing a good picture, but what you describe sounds common. Chameleons will do that to try and clean and or remove something from their eye. Proper humidity can help. Monitor closely.
From all the people I have talked to who have purchased the habba mister, most people wished they didn't. Most end up throwing it away and buying a more expensive model.