I don't believe that's peppering at all - just the genes coming through from the parentage.
Don't worry about it for now. Give them good care & let them grow out & see what you get.
And I don't believe they're not good quality either. Their shape is not unusual for their age and size. The determination of the quality of those fish is far too early to tell.
Do your thing, and I sincerely believe those fish could turn out better than you might expect.
Keep up the good work.
Regards & good luck,