Holly cow batman what with all the SE cables coming out of that little
4-11/16 Sq. junction box, nipple back thru the electrical panel. And why
isn't anything written on the box cover, something useful, like maybe, I
know, what breaker turn off the power to all those wires inside the j-box
That so the electrician doesn't have to guess.
But your panel has directory, and if it written correctly, the electrician
only needs to be able to read your hand writing.
Bathroom power outlets need to be on there own individual circuit.
The Bathroom may be supply by only one 20 amp. circuit, and this
circuit can supply power to your bathroom power outlet.
But only for that individual bathroom.
You need to fix any wiring coming off a 20 amp. breaker, that is #14 to
#12. The rest, well it your home. And when and if you should sell it,
a Home Inspector is going to write up, any code violation he or she
should observed.