Hi there, he's a bit on the small side but is not an unhealthy size. Some dragons are 20 + inches at a year but that doesn't make them more healthy. You might feed him another small bug meal a day for a while but don't be in a hurry to fatten him up. He still has a good 8-12 months of growing to do but it will be at a much slower rate now, especially once he reaches 16-18 months. .