The pyramiding may never completely go away, but the shell should smooth out some if you get them on a well-balanced diet (this may take a while to be noticeable though) .
Read the sticky under the feeding section on what to and not to feed. More variety in their veggies/plant matter would be good such as green/red leaf lettuce, dandelion greens, squash, zucchini etc. Mix it up and feed them veggies daily.
The pellets should be the amount that will fit inside their heads if the head was hollow once-a-day, every other day. And the krill should be no more than once a month as a treat. Other live prey such as feeders, crickets, or worms can be given occasionally if they have a healthy diet.