Can I itemize a side business and then add that income to my regular income and use the 1040EZ form to file?

[AlanT]

Unfortunately, you cannot.  

First, the 1040EZ form was eliminated for 2018.  The only forms are the 1040 and the 1040NR for non-residents. 

Second, your self-employment business income must be reported on Schedule C.  You cannot determine your net profit and add to your W-2 income because your net profit would be subject to self-employment taxes.