Chicken is one of those foods that we are cautioned to make sure they are cooked through to ensure salmonella is not an issue. As a result many folks cook it a little longer "just to be on the safe side". That's the chicken fries out.
There are two things you can do:
1. Brine your chicken parts
2. Use a thermometer to determine when they are done.
I find that boneless, skinless chicken breast, that isn't crowded takes 20-25 minutes to reach a safe temperature (74°C / 165°F). At that point, it isn't dry. Chicken with bones left in might take a little bit longer to reach that temperature. I bake thighs and drumsticks to a slightly higher temperature, because otherwise there may be pink bits near the bone.
Chef John had a recipe where he salted a whole chicken with kosher salt and then roasted it. I thought he put on a lot of salt but I tried it anyway. I was really surprised. The skin got crispy, the chicken itself was moist and very good, and it didn't taste oversalted.
Whether kosher salt would work on chicken parts, though, I don't know.