I sometimes think about getting a lizard for a pet.
I would suggest a chameleon or a gecko as a pet, as they are small and change colors.
Maybe it would be too difficult to let a chameleon wander around my apartment, since they're so good at camouflage
I wouldn't let a chameleon wander, you'd have to put him in his own space so you don't lose him! 
Do you have lizards of any kind as pets?
No, I always wanted a Komodo dragon though.. but they can get up to 3 meters long!!!