u/HoodsBallsOnASkillet

I have 2 leopard geckos, 1 male, 1 female. Both get fed on the same schedule, but have drastically different weights. The female has been consistently getting smaller despite continuing to eat. I have tried high fat worms, dubia roaches, crickets, but she can't seem to put on any weight. Anyone have any advice? Pictures for comparison between the two.

Edit since it got flagged: they are not Cohabitating. Separate tanks