If you are sensitive to salty foods, you can completely eliminate the garlic salt.
If the sauce is not thick enough, turn off the heat and allow it to sit for 5-10 minutes. Alternatively, you can continue to simmer the dish, stirring occasionally for another 5 minutes.
Store leftover teriyaki chicken in an air-tight container kept in the refrigerator for 3-4 days. Reheat in a skillet over medium-low heat until warmed through.