Contrary to myth, nuts do not make you fat as this study confirms. In fact nuts have a higher protein to sugar level than any snack. The study was done regardless if the nuts were roasted, dry roasted, salty, unsalted or grown on a tree or in the ground.
Also you want to increase the good fat, lower the bad fat and lower your sugar intake. Nuts help you achieve that.
The squirrel above looks fat because he is about to hibernate and go without food for 6 months.