Here is the simple mixture I use for my "House Seasoning":

1 cup salt
1/4 cup fresh ground black pepper
1/4 cup garlic powder

1/8 cup onion powder

1 Tbsp garlic salt

1 Tbsp onion salt

1 Tsp coriander

Using the portions described above, mix this together and then put in an air-tight container.

I like to use this as the base season for a lot of things, including chicken. Start with this and then add other seasonings as desired.