Based on a Google search and the following link, no.
Google defined child porn using the term "sexually explicit conduct", involving a minor, fair enough, gotta look deeper.
Cornell has a legal definition of sexually explicit conduct for us, which basically breaks it into 5 categories, actual sex, bestiality, masturbating, specific kinds of abuse, and displays of various body parts.
https://www.law.cornell.edu/definitions/uscode.php?def_id=18-USC-821371409-1416780790
If this would be CP, it'd have to be some kind of abuse or the display, and I don't think anything Nick aired would count as "masochistic" or "sadistic". The body parts listed are also specific and don't include feet.
So, in the US, it's just really creepy, not CP. the fact we have to delve this deep to determine it's not CP is pretty telling on its own, though.
I have never heard of anything secure doing that. Assuming they have taken security steps, it would mean they recorded those characters in plaintext when you set your password, but that means that at least those characters aren't secure, and a breach means some hacker has a great hint.
When the hashing occurs, it happens using the code you downloaded when you visit the site, so it's your computer that does the hash, and then just the hash is sent onwards, so they can't just pull the letters out of a properly secure password.
A secure company would use two-factor authentication to verify you above and beyond your password, anyway, since a compromised password somewhere else automatically compromises questions about your password.