First of all, I love your food pictures!! Although I'm not currently dieting (yet, I should be . . .
), it can be really frustrating when you plateau. Happens to most people. As Figgy mentioned, you may be building muscle, etc., and muscle is heavier than fat. But to be leaner, stronger and fitter is a far better trade-off to me, than seeing the scale drop an additional few pounds. That's just my two cents worth here.
As for your tastes in food changing, I suppose that's a good thing. (But I wouldn't know--I still loves me my chocolate and chips!
)