Heat the olive oil in a large pot over medium heat. Add the pork cubes and cook until lightly browned on all sides, about 5 minutes. Remove the pork and set it aside.
Add the onion to the same pot and cook until softened, about 4 minutes. Stir in the garlic and cook for 1 minute more.
Sprinkle the smoked paprika over the onions and stir for 30 seconds to release its flavor.
Pour in the chicken broth and return the pork to the pot. Add the salt and black pepper. Bring the mixture to a simmer.
Add the pimientos and let the stew cook gently for 15 minutes.
Stir in the zucchini slices and simmer for another 8 to 10 minutes until the zucchini is just tender.
Remove the pot from the heat and sprinkle with the chopped parsley before serving.