Remember peanuts aren't a nut, they are a legume and can be carby, esp if you aren't measuring.

Weight your handfulls for a bit and see how much you are actually consuming. Also maybe post some of your typical menus to see if there is something else that ocul dbe blamed such as bars or sugar free candy.

Also when you say you aren't losing weight, for how long? It is normall for there to be a slow down or a stall in the third week. Small stalls also happen all through losing weight as your body catches up to itself, that's just part of weight loss.