From ESPN FPI:

Coming off a win over Baylor, BYU has a reasonable chance to win the Big 12 according to FPI. FPI gives BYU a 15.1% chance to win the Big 12 and a 23.7% chance to make it to the College Football Playoff. Here are the teams with the best chance to win the conference according to FPI.

Iowa State - 19.6%
Colorado - 15.2%
BYU - 15.1%
Kansas State - 13.6%
Arizona - 7.0%
UCF - 6.5%
TCU - 5.6%
Texas Tech - 5.1%
Utah - 4.9%
West Virginia - 3.1%