It was a hit!! Didn't have coarse salt so used Himalayan fine and because I used my toaster oven to cook, had to set at 325 for 15 mins. It did stick to paper but second batch just sprayed with cooking oil and it was fine. Everyone asked for the recipe. Making it again now.
Disappointed. Followed recipe. Lime and "heat factor" from pepper flakes both barely present. Also, nuts ended up sticking to parchment paper. I suggest upping the lime zest to 2 tsp and the red pepper flakes to a full tsp. and checking in every few minutes or so on the roasting nuts to ensure they're not sticking. Use the wooden spoon to move them around the pan.