Since you are domiciled in FL and spent fewer than 183 days in NJ, you would file a non-resident NJ return. On that return you would report only your NJ wage income, NOT your pension income.
FYI, a part-year resident is a person who literally moves his domicile from one state to another during the tax year. Your domicile is your main, primary home, and you can have only one domicile at a time.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
