I have one of those - always looking for food!!
Angel is around 8.5-9lbs. I feed him Wellness Core and THK Embark. He gets 1/8 cup 2 times a day. In-between he gets carrots, green beans, low fat cottage cheese, apples, etc. I have also started giving him a snack at mid-day, but it is part of his overall daily allowance! I feel bad when I look at his dish and see about 12 pieces of kibble! But I had a chi that was around 12lbs, so I stay strong!
Check out Dog Food Reviews and Ratings | Dog Food Advisor
. Lots of good info there. You can also sign up for recall alerts.