Still somewhat annoyed that there is no seat belt on the shuttle, even if it is to maintain continuity with TOS. M'Benga looked like he was going to bang his head and get a concussion when they were landing.
La'an: They won't see us coming.
Zac: We totally saw you from the other side of the planet a hemisphere away.
What was Zac trying to accomplish? He lured them there with the Starfleet Delta, but he was not going to hitch a ride home. He expected whatever ship that comes to inspect to... forget and go away, or suffer some disastrous result when the crew become unable to function? Why not just stay low and be king if he wasn't planning to leave?
Zac didn’t intend for Starfleet to notice the delta. He was content to just stay on Rigel VII as High Lord Zacarias, thinking that Starfleet would never return to the planet because of the debris field and the radiation. But then the Kalar used the delta as a symbol and it got spotted.
PIKE: Zac. We saw your message, the, um… the Delta in the garden. It’s why we came. Isn’t that why you did it?
ZAC: The people here adopted it as my symbol. I should have known better. It’s all getting torn out tomorrow.