It's fine to eat the way you want. There is no requirement to combine particular foods at any given meal. As long you are eating foods that are on-plan, just eat what you choose when you choose.
As far as I know, what matters is what you eat over the course of the days or weeks that matters, not what you eat at a particular meal.
P.S. I have my own eating pattern that evolved over the past few years. I like to start the day with lots of starch, but my evening meal is mostly salad greens and steamed veggies. This works for me, but other people might prefer the opposite. It's all good.
Bottom line : Do whatever works
.