Green Anole Baby

Question
I have had my anole for about 3 months. We originally had 2 but they both were brown all the time so I gave one to a friend and mine has been green ever since. I just found a baby in the tank. I was not expecting this with only one lizard. I read that I need to remove it from the tank, but could there be more? My tank is very crowded with plants and I almost didn't see this little fella. Do they all hatch at once or spaced out? Any help is appreciated.

Answer
 Females can retain sperm even after one mating.  And sometimes one or two hatch before the others, you may have as many a ten in a clutch so keep an eye out.  Get another tank set up for the babies and get some Rep-cal calcium powder to coat mama's crickets so she csn replenish her body from the egging.