When cooking veg (BBQ, Air fry, baking or roasting) I always add:
A herb of some sort, eg: rosemary, thyme, mint, basil, parsley, chives, coriander, etc. Can be fresh or dried).
An acid of some sort, eg: plain vinegar, lemon juice, lime juice, white wine vinegar, apple cider vinegar, etc).
A sugar of some sort, eg: honey, maple syrup, marmalade, etc.
I sometimes also add a spice of some sort, eg: cumin, BBQ seasoning, cinnamon, chinese 5 spice, etc.
It always elevates an otherwise boring veg to another level, so makes them more enjoyable to eat.