Place the chicken thighs in the bottom of the slow cooker.
Add the sliced red peppers, chopped onion, and minced garlic on top of the chicken.
Sprinkle the smoked paprika, salt, and black pepper over the vegetables.
Pour in the chicken broth and the can of diced tomatoes, including their liquid.
Cover and cook on low for 6 to 7 hours, until the chicken is very tender.
Remove the chicken thighs, shred them with two forks, and return the meat to the slow cooker. Stir to combine.
Ladle the stew into bowls and sprinkle with the chopped parsley before serving.