We eat gluten free in our household. I have eggs and spinach with cheese just about every morning. Meatloaf with lots of veggies stuffed in it is so good! I love pineapple and mangos. I pretty much eat the same as before, just occasionally eat whatever I'm craving. Salmon with rice or quinoa is also a favorite of course in moderation.
A multivitamin and your prenatals also help with whatever your lacking and/or what the baby needs. I wouldn't stress too much about it, your so early. When you do your sugar test around 25 weeks, you can always talk to your doctor about ideas. Pinterest is great for ideas for dinner too.
Here's some advice on great foods to eat when you're pregnant as well as the nutrients you need from MedHelp.org and the I'm Expecting app. You'll find them in Week 16 and Week 3.