Preheat the oven to 350 degrees F. Place oven rack in the middle of the oven. Line baking sheet with a silicone baking mat or heavy-duty aluminum foil buttered generously.
In a large bowl, whisk together the oats, flour, sugar, cinnamon, chili powder, baking soda and salt. Stir in almonds.
Add butter, half-and-half (or milk), corn syrup and vanilla extract. Stir to combine.
Scoop heaping teaspoons of batter onto the prepared sheet at least 3 inches apart, six cookies per sheet. Bake one sheet at a time until the cookies are flat and browned around the edges, approximately 7 to 9 minutes. Remove from oven and let cookies cool on the sheet several minutes, until firm enough to transfer to a cooling rack.
When all cookies are baked, melt the chocolate in a metal bowl set over a pan of simmering water. Using a very small tipped pastry bag or the tines of a fork, drizzle the chocolate in a zigzag pattern over the tops of the cookies.
Latin Lace Florentines Recipe: https://whatscookingamerica.net/Cookie/LatinLaceFlorentine.htm