Smooooth and Tidy, p r e t t y n i c e ! Good use of Godot's UI system ;) I leave the screenshots with my favorite lines!
Two things that came to me:
One is that Im too focus on clicking and checking for when the buy buttons become available, so I missed a ton of jokes. Maybe adding an SFX or other juice for when the text changes or switching the position of buttons and stats? Im not sure T_T
The second one, irrelevant if you don't plan on doing more clicker games, is how the upgrade rate gets pretty slow at around the first screenshot:
from 0 to 11771 total eggs I upgraded up to 10 per sec and 35 per click,
from 11771 to 30220 could only upgrade an additional 3 per sec and 5 per click, and it took at least twice the time
No idea on how this could get fixed, I guess its when you would add another way of collecting eggs, like buying a whole barn with chickens O.O
Regardless, Its good work OuO