I feel like a hypochondriac asking so many questions about my kitty!! Bear with me please!

My question is this - whenever Maggie sniffs her food she scratches around the area. Scratching the ground as if she were in her litter box. She eats her food, but she doesnt dive in. So I was wondering if anybody has a clue to this behavior. Does it mean she doesnt like her food? that she wishes she could bury it - or is this normal? I've been giving her Iams dry food since I adopted her from the pound a few weeks ago. She's a year old so possibly she is used to some other food from whomever she lived with before? My last cat was quite picky but she never scratched around her food bowl...she just walked away from her food. Help!