Yes. Consulting is an easy side hustle to do outside your 9 to 5 or paired with another part-time job. Just be careful that your full-time job has no non-compete clauses or that your moonlighting doesn't affect your performance in the daylight. Also, starting part-time with 1-2 clients is an easy way to prove your value and build your portfolio, so you'll already have a track record of success when you commit full-time.