By Chris Rosvoglou Eventually, the Pittsburgh Steelers will want to see what Kenny Pickett can do as their starting quarterback. He’ll have to earn that role though. Thus far in OTAs, Pickett is working with the third-string offense. That means he’s behind Mitch Trubisky and Mason Rudolph in the pecking order. Even though Pickett was drafted in the first round, he’s not surprised he’ll have to work his way up the depth chart. He knows nothing is given in the NFL. “I didn’t think I was going to walk in and be the 1,” Pickett said, via ESPN’s Brooke Pryor. “It’s kind of what I was expecting, jus…