When Chloe goes to get Donovan to try her peach cobbler when he's running on the treadmill, he comes off it with one airpod in his air and then it disappears and then later in the same scene it's back in but in a different ear.
Chloe is hiding a certificate behind her and Buck enters the garage; she raises her left hand and her right hand appears to be empty, though she should still be holding the item.