In a saucepan over low heat add the cocoa powder, cinnamon, chili powder and cayenne pepper. Toast until spices begin to release their aromas, about a couple of minutes. Using a small whisk or wooden spoon, slowly incorporate the almond milk. Raise the temperature to medium-high and bring to a slow simmer. Stir in the agave nectar and remove from the heat. Rim a mug by dipping into a saucer of water, blotting and dipping into saucer of paprika. Pour in tequila. Add hot cocoa mixture. Stir with a cinnamon stick and serve.