Preheat oven to 200°. Line a rimmed baking sheet with foil.
In a medium bowl, stir together butter, hot sauce, chili powder, garlic salt, and cayenne pepper. Add pecan halves, tossing gently to coat.
Arrange pecans in a single layer on prepared baking sheet. Bake for 30 minutes. Let cool completely. Store in an airtight container at room temperature for up to 3 days.
Recipe by TeaTime Magazine at https://teatimemagazine.com/spicy-pecan-pimiento-cheese-tea-sandwiches/