I am student on F1 visa from india. I have received 1099-Misc with income reported in block 7 of 1099-Misc. I am regular employee of the company and get 1099-Misc income for unused PTO. I am filling 1040 NR and wondering how should I report this income and can claim some expenses to reduce taxable income.

Any help would be appreciated.

If you have not completed 5-years on F1 and OPT you must file resident tax return. The 1099-misc income is reported on schedule C or C-EZ (form 1040). You can deduct your job related expenses. The net income on C or C-EZ is not subject to SE tax in your case.
As per tax treaty, you will get standard deduction also. File Form 1040R and 8843.
Read:
Your U.S. Tax Return: U.S. Tax Treaties for Students and Apprentices