Cut the chicken breasts into small pieces, season with the salt and pepper and fry until golden brown. Set the chicken breasts aside.
Chop the pepper and onion and fry until soft. Add the cumin, chilli and paprika powder. Then add the salsa and stir. Add the chicken pieces and double cream and stir well. Finally, add the spaghetti and cheese and cook, stirring constantly, until the cheese has melted.