Both chocolate and salt are highly dangerous to parrots. I would recommend you stop immediately.
Parrots cannot excrete salt from their bodies like we do and it thereby builds up into toxic levels. In the wild they have access to specialist clay cliffs where they eat the mineral clay to assist in the removal of the salt build up.
Chocolate is a known killer of parrots, its a known fact that one pound of chocolate will kill a 7lb dog! Its the theobromine in it that is the killer. Parrots cannot metabolise the theobromine and accumulation of this leads to toxicity resulting in symptoms like lethargic, restlessness, vomiting, diarrhea and excessive urination. In severe conditions, it can leads to internal bleeding, seizures and death.