I wanted to rent a 1Bedroom apartment at Kings Cou...

I wanted to rent a 1Bedroom apartment at Kings Court apartment, Beaverton but in spite of making $130K+ per year and having 820+ credit score they wanted me to have 1 month deposit. I asked them the reason and they said that I do not have enough rental history. Even though I was willing to give them my owner's phone number they wanted to see a copy of previous lease agreement, which I did not have. On top of this, they insisted on speaking to my supervisor at my employer. I told them that they can verify my employment at the company HR, but they insisted on knowing my direct supervisor's phone number. is this even legal to do this?