Some additional foods to consider including or increasing during pregnancy are those rich in iron and folate.
Iron-rich foods: red meat, beans, lentils, chickpeas, and spinach. Folate/folic acid is also extremely important, and expectant mothers should consume plenty of dark leafy greens like spinach, as well as oranges and orange juice, fortfied cereals and beans.
These nutrients help with the baby's brain development and also reduce the risk of neural tube defects, so they are definitely worth focusing on!