I saw a friend's mom dip her fingers in a bowl of water and sprinkle it over her salad, then she would season her salad. I now do the same, and I use a mixture of different spices to add flavor. The water gives the spices and seasonings something to stick to, without turning the salad soggy!
I vary the spices I use. Sometimes i'll use seasoning salt, sometimes i'll use Goya Sazon packets or Adobo. I love spicy foods, and I'll sprinkle curry powder, cayenne pepper, chili powder, paprika, garlic and onion powder for a spicy kick!