Make mashed potatoes, double the sauce recipe so you can have the chicken over mashed potatoes and extra sauce over both.
This is a great roasted Thanksgiving Turkey recipe from the Pioneer Woman. https://www.foodnetwork.com/recipes/ree-drummond/roasted-thanksgiving-turkey-2250059
Some ideas for dipping into the cheese fondue: Bread (baguette, French bread etc.), broccoli, ham, cooked potatoes, apples, pretzels etc.
These ingredients are for a prime rib but it tastes amazing when searing filet mignon. If making the prime rib, follow these instructions: https://kentrollins.com/fool-proof-prime-rib/
The dough is best made at least 24 hours in advance, and 3 or 4 days is even better.