Most of mine yawn as well occasionally.
The scale issue on the head looks like a injury from shedding where a scale popped off. No big deal as it happens. After a few sheds it will likely disappear or be hardly noticeable.
I would certainly move a 180 gram BP up to rat pups. I feed every 5 days until around 250 - 300 grams, and then go to every 7 days.