Your chicks are so cute, they sure have grown a lot!
From that first photo you posted of your pair on your breeding journal, your hen hardly has any markings on her and while she does have the characteristic eyes of a recessive pied budgie, it's very possible that she is a double factor dominant pied who is split for recessive pied.
She can very well be a combination pied budgie.
Your pied chick seems to have markings that would make him/her a single factor dominant pied.
To have a dark-eyed clear chick, one of the parents must be a clearflight pied (and the other a recessive pied).
You mentioned the father is a clearwing. From that photo of your pair on the nest, I'm unable to see if the male has a pied patch on the back of the head, nor can I see the crop and belly area, the same thing goes for your female.
From the little I can see, it seems your female is sky blue in colour and your male appears to be cobalt and if that is the case, then your youngest chick is not mauve in colour. It will either be cobalt or sky blue.
Even if the father were to be mauve, since the mother is sky blue, the chicks would necessarily all be the intermediate colour, which is cobalt blue.