Adjust oven rack to center position and heat oven to 350 degrees. Spread nuts on a 12- by 18- rimmed baking sheet and back until fragrant and very hot, 15 to 17 minutes.
Meanwhile, microwave butter until melted and warm, stir in sugar, pimenton, cumin chipotle powder, and salt.
Pour hot nuts into a large bowl and immediately add spice mixture. Stir with a rubber spatula until nuts are evenly and well coated. Return nuts to baking sheet to cool and dry. (Can be stored in an airtight container up to 1 month)
Recipe by Three Many Cooks at https://threemanycooks.com/recipes/nibbles-and-apps/a-new-bar-nut-finally/