No, it is not unethical to use ChatGPT to make a cover letter. ChatGPT can help you save time when you’re writing your cover letter.
Remember to give ChatGPT a clear prompt with comprehensive details about your work experience, notable achievements, and academic or trade qualifications. And don’t forget that the cover letter text it generates will be plain text. You should put it into a pre-designed cover letter template to make it stand out to recruiting managers and make it easier to read.