Heat a heavy pot over medium high heat. For thicker chicken breasts, cut them in half through the middle to make thinner cutlets. Season the chicken breast on both sides with salt and pepper.
Add the olive oil to the heated pot and swirl it around. Add the chicken in a single layer. Do this step in batches if needed. Flip the chicken and continue to cook it until has cooked through completely.
Remove the cooked chicken breasts and set aside.
Add 6 cups of chicken broth to the hot pot.
Add the enchilada sauce, garlic powder, onion powder, cumin, and chili powder.
In a separate bowl combine the masa harina with the other 2 cups of chicken stock.
Add the masa harina mixture to the soup. Bring up to a boil and reduce the heat to a low simmer. Stir occasionally.
While to soup cooks, shred or dice the chicken breast and add it back to the soup.
Cook the soup for 20-30 minutes at a low bubble.
Turn off the heat and add half of the shredded cheese. Serve and garnish with more cheese and tortilla strips.