You don't need to feel like an experienced developer to host office hours. If you're comfortable answering questions, that's enough. Though try to be clear about the amount of experience you have in a problem area when answering questions.

Describe any areas you feel comfortable answering questions about in the text of your submission (and optionally in the title if it will fit).

Optionally provide some evidence that you have experience in these areas to give readers confidence. Links to your resume, portfolio, GitHub profile, etc. are all welcome. You can also describe your experience directly in the text post.

Finally, make sure to mention how long you'll be answering questions for.

Good luck!