He/she looks pretty good.
It's common for them to go through a period of stress when going to a new home, and this is why they don't eat quite as much. Give it some time and you'll probably see the appetite increase over the next 7-10 days.
It would be good to list your exact type + brand of lights in case anything needs to be adjusted and also a pic of the entire set up.
Hope your baby becomes a happy + healthy member of your family.