Hi J.,
Congratulations on your 10 month old and soon to arrive son. Generally, kids do not overeat at this young age. She could very well be going through a growth spirt. And if you are concerned about her eating the food you eat -- make sure you model good eating habits -- in other words, eat healthy foods, yogurt, bananas, toast, etc. Things that would be good for her to try and eat.
I also recommend getting a couple books -- the first book is called "Super Baby Foods" This book is awesome and with another baby on the way, it will be well worth the investment. The book is organized much like the "what to expect when your expecting" book, so set up by months. And although your daughter is 10 months, the author gives great ideas on how and when to introduce new foods to your child's pallete, starting at age 6 months.
The foods she suggest are fresh and cooked and frozen for later use. Therefore, you could even eat these foods unlike the baby food out of a jar.
The other book I recommend is "How to mother a successful daughter". This book helps you to educate you on the subtil messages we give our daughters that impact their self-esteem -- therefore helping us as mentors to model more empowering behaviors. This will also help you when trying to raise your son to be respectful and compassionate to women and not objectify them. I suggest this now so that you can properly handle eating issues with your daughter instead of accidentally invoking them. (If you concern yourself now with eating issues, you have a long road ahead of you to the teenage years when it could be more life-threatening. That is why is it important to model the right things for your daughter in your own life.)
Likewise, the auther first wrote a book, "how to father a succesful daughter" so very helpful for your dauther's father to realize how important his role is in her life as well.
If books are not of interest to you -- enroll in some Early Childhood Family Education classes (ECFE). Nearly all school districts offer these early childhood classes (very affordable - financial assistance available if needed), and they provide a terrific forum for you to discuss with a parent educator and other parents of similar aged kids, like issues and how to handle them.
Good luck