Place boneless, skinless chicken thighs in the crock pot
Add paprika, garlic, onion, dried oregano, thyme, paprika, cayenne pepper, salt, and pepper
Cook on low for 6-8 hours until the chicken is tender and cooked through
Shred the chicken using two forks and return it to the slow cooker
Serve the shredded chicken on pita bread with tzatziki sauce, tomatoes, and cucumbers