ChatGPT is terrible at turning chat into PDFs. There is a better way to do it.
Steps;
1. Copy the whole chat, using the copy button at the bottom of the chat.
2. Go to https://chat.deepseek.com/ and prompt it with >>
Convert the whole text into latex code
3. Go to https://app.crixet.com/ and paste the whole code there and compile it.
And at last export it as a PDF. So, there you have it.