Not sure whats going on.....

[Tegugirl3]

Last season I hatched a baby on 9/11/2014 I decided to keep him he hatched early and was very small and he's about to be a year and isn't that big at all looks small to me... first pic is the day he hatched second and third are him now







Hes in a 20 gallon long paper towel 3 hides etc.....and he gets his supplements

 

[Aimless]

his tail looks decent and he doesn't look underfed. if he was 'preemie' then it might be reasonable for him to just be a little small. I wouldn't be overly concerned.

 

[Tegugirl3]

Thank you ...I just wanted to make sure he was ok....he was a preemie he was so small when he hatched but he survived he's very calm Leo.

 

[Lana&Squirt1999]

My gecko is about a year and looks to be about the same size. I wouldnt worry unless theres obvious medical issues. The 'runt' typically stays small.

 

[Tokaybyt]

Another thing to keep in mind...

Back in the late 90s to early 00s, huge for a leopard gecko was 70-90g for a male and 50-70g for a female; average size back then was 45-60g for males and 35-50g for females. That's changed now when the Hine-line hypos (more famously known as super hypo tangerine carrot0tails now) and more recently the giant gene. Lengths range from 7-10 inches, even before the giant trait.

Many keepers also feed exclusively meal worms, which some scientific studies have shown to trigger such geckos to be morphologically larger than geckos of the same age raised on crickets or crickets and mealworms. (GROWTH RATE VARIATION IN CAPTIVE SPECIES: THE CASE OF LEOPARD GECKOS, EUBLEPHARIS MACULARIUS, Herpetological Conservation and Biology 5(3):449–455.) The authors of the above paper also cautioned on feeding exclusively mealworms due to the possibility of negative results of an excessive growth rate and long-term nutritional value.

From the looks of your photos, I'd too say he's on par for his age.