Heat oil in large pot over medium-high heat. Sautee onion and garlic until yellowish. Add all the ingredients (except chicken, Reese’s cups and peanut butter) and simmer about 7 minutes. Reduce heat to medium-low and simmer about 10-15 minutes more, blending in Reese’s cups and peanut butter. Throw in shredded chicken until heated through, about 10 minutes more. Add salt and pepper to taste, remove the cinnamon stick; serve on top of corn chips in an appropriate vessel.