The Los Angeles Chargers were a little boring during the NFL draft. Fittingly, it's the same story for the official jersey numbers for the rookie class.  Seriously, though, one of the biggest talking points that registers as even semi-controversial for the Chargers exiting the draft is the age of their first-round pick.  In fact, NFL executives have thrown criticism at the Akheem Mesidor pick.  Other than that, though, the Chargers traded around the board a bit and used four of their eight selections on offensive linemen. Boring, but much needed as Mike McDaniel arrives to install his own scheme. Protecting Justin Herbert is key, too.  Those jersey numbers? Perhaps by far the most interesting thing is veteran  Teair Tart changed his jersey number  this offseason. That, on the heels of signing a big-money extension with the Chargers .  Chargers rookie jersey numbers update Akheem Mesidor | Kirby Lee-Imagn Images Round 1, Pick 22: EDGE Akheem Mesidor (No.…