aside from being sensitive to certain herbs/spices, they are all fine. salt, should be used in moderation.
my favorite solo spices include: cayenne, curry, garlic, black and white pepper, sea salt (in moderation!)
spice blends: any variety of Mrs. Dash, various Jamaican jerk seasonings, lemon pepper rub, etc...etc. Most blends are heavy in salt, and especially lookout for MSG (mono-sodium glutamate) which is like salt on crack! avoid it like the plague for a variety of reasons.
you can use marinades too, which is easy to do the day before you plan to cook. plain italian salad dressing makes a decent chicken marinade. you can also put it over cubed potatoes, wrap in foil, and grill it.