When Ensign Burke leaves her navigator station to join the Union delegation, a male officer takes over. Later, a female officer is in the navigator position.
The male officer was already on the bridge and took over the console when Charly left. The female officer then relieved him while the action was elsewhere.
At 31 minutes and 50 seconds there is a krill in the audience who can be seen with their sleeve sliding down and human skin showing.
When the Krill ship locks its tractor beam on the Orville, Kelly orders Bortus to target the Krill's tractor emitters. Weapons control is handled by the tactical officer from the tactical station, to Bortus's right. As Talla is at her station, she should have been given the order, not Bortus.
In the chambers where Teleya shows Ed what happens to parents who abort their children, Ed asks her quite emotionally if that was the world where she wanted to raise their child. Teleya seems unperturbed by the fact that Ed mentioned their daughter within earshot of Krill soldiers even though she has done everything she can to keep Anaya secret.
When the shuttle is descending towards Krill, one of the members of the delegate asks "How dense is this cloud coverage?" to which Ed responds, "About 80 kilometers." A kilometer is a measurement of distance, not density.