It takes more than 1 hr prep time to create an UNBAKED chicken pot pie, which is then baked when ordered. I have watched them do it. They bake the chicken, prepare the veggies and sauce. Then another person prepares the pie dough, presses it into the bowls. After the chicken and veggies and sauce are combined, there is a vat of the filling simmering in the kitchen. They ladle the filling into the dough lined bowls and then press the top of crust on the bowl and refrigerate. When somebody orders the pie, they take it out of the fridge, and bake it until golden brown (about 15 or 20 minutes). That is how it is done.
This new "chicken pot pie" involves no preparing of ingredients. Its in a huge CAN and not prepared onsite. The ingredients are substandard, and the "chicken" looks suspiciously like mechanically separated chicken like used in Mc Nuggets or formed chicken patties. There is no "grain" in the meat. That is not possible when you use chicken breast. The peas have dimples, which means they were previously frozen. The carrots are tiny chopped cubes instead of scallop sliced. The sauce is now primarily cornstarch instead of cream and butter.
The bad pie costs less to make and takes almost no time to prepare. You can bake a whole sheet of crust cookies in 20 minutes, and the preparation of the "filling" takes less than 5 minutes. All the cooking of chicken and veggies is no longer an overhead of manhours. This new recipe is designed to increase profits and nothing more.
Which is why I said what I did. This is all about moving the prep kitchen offsite, which usually is done to save costs. It saves them both in hours used and also in the number of actual trained and certified cooks/chefs they need. But in raw materials cost the ingredients because of the canning and other freezing and preservation techniques may cost the same or even a little more - but they make that up and more on labor.
Before I got to my current field I spent a dozen years in the restaurant business, mostly in management. In that capacity I got to witness firsthand the huge quality difference between a "kitchen" with commissary pre made foods and a full prep kitchen.
The commissary type kitchen can have unskilled workers prepare the food (following specific directions) and get a minimum quality level - it saves labor dollars but also puts a quality ceiling on the food because it is pre done. On balance it is cheaper because although the pre made food costs a bit more to bring in the lower labor cost more than offsets it.
The full prep kitchen bring in scratch ingredients and makes everything in house - the cost for the food is less but the labor cost is more (because you need actual certified chefs/cooks to do this properly). The food quality is really up to the head chef at that facility - the floor is lower but the ceiling is higher. A bad chef in a full prep kitchen is a disaster but a good chef in a full prep kitchen is a marvel.
I will close with one thing I observed way back in the early, early days of my 12 year restaurant jaunt. I spent some time at a Popeye's Chicken. They were trying to do it both ways - run a full prep kitchen with unskilled help (not certified cooks/chefs). So we had teens making FROM SCRATCH chicken batter, buttermilk biscuits, mashed potatoes, red beans and rice and so on. To say the food quality was uneven was to say little.
Several years after I left I heard that Popeye's finally moved to a commissary model for their kitchens - in their case it was the only way to get some consistency in quality short of hiring certified cooks/chefs for each fast food restaurant which would have caused prices to skyrocket. So sometimes the commissary model is appropriate. But from my understanding of Marie Callendar's it is not appropriate there because they sell themselves as a specialty restaurant. Specialty restaurants in my experience and opinion should have skilled chefs/cooks and a full prep kitchen.