There is very little in our posted Audiobook Mastering process that can change the quality of your voice.
https://wiki.audacityteam.org/wiki/Audiobook_Mastering
You are much more likely to have trouble by reading some healthy and some with a head cold or changing rooms or microphones in the middle of a show or book. We can’t fix those later.
If you set up a Kitchen Table Studio…
https://forum.audacityteam.org/t/too-compressed-rejection/52825/22
Use the same kitchen table every time.
Koz