Picky Eater - Blue Tongue Skink

Hey all!
First time posting. We are reptile lovers with several species that share our home. One of which is an approximately 14 yr old skink. He's in great health but is very picky when it comes to his diet. He refuses fruits and veggies, opting only for egg or canned pet foods. We only offer him the canned stuff with pure beefs and no harmful additives.
We have offered him a great variety, and have tried to pressure "starve" him to try some of these healthier items but to no avail.
If anyone has experienced something similar and might have some advice please let me know.
Thanks much!

I had a northern that would only eat lean meats and boiled eggs. I had to mix veggies into it to get him to eat them. He did eat grapes on his own though. Try dicing up the healthy stuff and mix it into it's dog food even if it tries to eat around it it's bound to eat a little bit of it. Best of luck to you.