In a slow cooker, whisk together chicken broth, canned tomatoes, diced yellow onion, chili powder, paprika, cumin, garlic powder, coriander then season with salt and pepper to taste. Add raw chicken breasts, cover with lid and cook on low heat 7 - 8 hours.
Remove chicken and shred. Return shredded chicken to slow cooker along with lime juice and fresh chopped cilantro and gently stir (if you wanted another filler you can add in some frozen corn or rinsed black beans). Serve warm with diced tomatoes, shredded cheese, tortilla strips, guacamole, sour cream, optional hot sauce and additional cilantro if desired.