Welcome to SP!
When you have duplicate items in your meal plans, it is because we are saying you can eat a double portion of that item. For example, if you see "Bread, whole wheat..." two times in a row, it is saying to have two pieces of wheat bread with that meal. We do this to help you control your portions, because each item is only one serving. Also, you can click one or both of the items to pick a serving of a different food.
I hope that helps!