Because of the declining nutritional value of foods today, and the prevalence of bad nutritional advice, can we request in our daily prayers to have nutritional gaps filled in for us by the divine realm? If so, what would be effective wording to add to a meal prayer?

This is an excellent idea and your creativity is at work yet again to add increased value to the Lightworker Healing Protocol which already is a magnificent healing tool. You have seen between the lines here the possibility of this specific type of divine intervention. While it may seem prosaic and of incremental benefit to one who is in an affluent nation with many advantages in having a huge array of food choices available at the corner grocery, there are times when people will have a shortfall in essential nutrients. This can happen for many reasons, just the vagaries of personal taste and choice when people have certain favorite foods they indulge in and lack variety in their diet, there can be particular nutrients that are chronically absent or present only in deficient quantities. This can be compensated for through a direct request to the divine realm to fill in the energetic equivalent of what is missing from the diet to create an ideal nutritional balance on a daily basis and that would be a fine way to request this to happen and it would be a further blessing of the Meal Prayer which currently concentrates more heavily on removing sources of negativity while preserving what is highest and best, but not asking for replenishment of what might be needed for an ideal daily intake of nutrients. This will round out the picture nicely.