Doubt the homeowner would've been staring at a $2,400 bill honestly. Framing nails into a stud near a shower wall, sure the inspector flagged it, but a 3 inch nail holding a stud isn't gonna magically back out and pop tile unless the whole wall is moving. The real issue is you nailed where plumbing runs, so the worry is a nail through a pipe, not the drywall six months later. Sounds like the guy did his job and you got lucky, but let's not act like this was a disaster waiting to happen. Training new guys on fasteners is fine, but the panic over one framing nail feels a bit much.

Man, you are right that wet batter is a mess in an air fryer, but I gotta say I see it differently on the par cooking part. Par cooking the chicken first is way more work than he needs to do, and honestly it dries out the meat. The real fix is simple, he just has to ditch the wet batter completely and do a dry coat with a little oil spray on top, that is what gives you that crispy shell without the slide off problem. I get why he thinks you are making it up though, because air fryer ads make it sound like you can throw anything in there and it comes out perfect. Tell him to try a light dusting of cornstarch, then spray, then a second dusting, and he will never go back to that wet mess again.