Make the broth by putting the chicken in a large pot and adding the water, oregano, garlic, onion and allspice. Bring to a boil, skim and simmer for 45 mins to an hour until the chicken is tender. Remove the chicken and strain the broth, reserving the broth. Take the chicken off the bones and shred the meat. Set aside.
In a saucepan heat the oil and add the onion, roasted garlic puree, tomatoes and the chilis and saute until the onion is soft. Add the broth and half of the line slices.and simmer for 10-15 minutes.
Add the rest of the lime slices and the chicken and serve along with the fried tortilla strips. Add the tortilla strips to each bowl of hot soup.