I'm certainly no expert on CFB gambling but it is concerning to me that people outside of the fan base for Nebraska are picking this game so close. Is it because they know something we don't, or vice versa?
I think it's a combination of Vegas knowing UCLA has talent, but isn't sure if it will be utilized, and that there is little or no film for DoNU to look at on this particular UCLA team to see what they'll do. Conversely, UCLA has has ample film and all summer to focus on DoNU.
Factor in an assumed home field advantage (providing Nebraska fans don't make UCLA fans look like Baylor fans...) and Nebraska's propensity for being unable to stop a dual-threat QB during Bo's tenure, and this game could be closer than what Nebraska fans would care for it to be.