02Heat oven or toaster-oven to 400 degrees. Place cinnamon pieces, oregano and cloves on a baking sheet or metal tray, and roast until lightly browned and fragrant, about 5 minutes; be careful not to burn.03Place chicken stock in a medium saucepan and bring to a boil. Add roasted spices, lower heat, and simmer for 10 minutes. Pour stock through a fine-meshed strainer into a clean pan, and return to a simmer. Add diced chicken and simmer until chicken is opaque in center, about 10 minutes. Add 4 to 6 tablespoons lime juice, as desired, and season with salt to taste.04To serve, place equal portions of chicken in center of each soup plate. Top with a small mound of fried tortilla strips and 1 to 2 tablespoons shredded cheese. Pour chicken broth into bowl, keeping mound intact. Garnish each bowl with avocado, a slice of lime and cilantro.