If so you may want to feed less Kale and more of the other types of greens noted on this site. http://www.beautifuldragons.com/Nutrition.html
Kale is high oxylates, so it is best to not feed that as a daily staple.
And yes an adult dragon should be getting calcium supplementation at about 3-4 times per week and the multivitamin 2 times per week.