It is male. Male lizards have a colorful dewlap which is a fold of skin under the chin which they flash during territorial and courtship displays.
It seems he is growing back his tail.
He was not afraid of me or my camera so I took a couple photos of him.
Green Anoles are also called American chameleons, although they are not true chameleons. This is because they can do a color change from green to brown, especially when stressed.