Preheat oven to 375 and place a sheet pan inside while it heats. In a mixing bowl, toss together the diced sweet potatoes, cut up red onion, 2 Tbsp olive oil and 1 1/2 tsp Overachiever seasoning. Once the oven is heated, transfer the mix from the bowl to the sheet pan and shake to arrange in one layer. Roast for 15-25 minutes, until cooked through and beginning to brown on the outside.
Cook the Brussels
While the potatoes roast, heat a medium to large pot on medium heat. Add the pancetta and render until crispy. Remove to a paper towel-lined plate and set aside.
Using the same pot, add the Brussels sprouts, celery, and candied ginger to the fond and rendered fat. Season with Overachiever (start small - maybe 1/2 tsp) and sauté until beginning to become translucent. Then add the cranberries and sauté another few minutes.
Bring it all together
Once the Brussels and sweet potatoes are done, toss them together in a bowl, then add the maple syrup and toss one more time. Transfer to a serving platter and sprinkle with the chopped nuts. Enjoy warm.