From the NJ Department of Health:
Pfizer Booster Doses Now Available in New Jersey for 65+ and High-Risk Individuals
If you are 65 or older, a long-term care resident, an adult with underlying medical conditions, or an adult at increased risk of COVID-19 exposure because of your job, you are now eligible for a Pfizer booster shot, at least six months after your second Pfizer shot.
Vaccine appointments can be made at any existing vaccination location without a prescription.
The CDC has announced they are evaluating the available data with urgency to make additional recommendations for people who got the Moderna or Johnson & Johnson vaccines, as well as for other groups of people.