Preheat the oven to 400 F and line a large baking sheet with parchment paper.
Slice the sweet potato in fries about 1/3" thick. Add them to the baking sheet and top with avocado oil, salt and pepper. Toss to coat and then evenly space on the baking sheet. Bake in the preheated oven for 20 minutes. Remove from the oven and allow to cool before flipping the fries.
While the fries are in the oven, add the ground beef to a mixing bowl along with the salt, pepper, garlic powder, and onion flakes. Gently fold in the seasonings, being careful not to overmix. Divide the ground beef and form into two burgers.
Scoot the fries over, leaving enough space for the burgers on one side of the sheet pan. Fold up a small piece of parchment paper into a rectangle with edges and place it on the baking sheet. You want there to be edges to separate the burger and fries. Add the burgers and to the sectioned-off parchment paper and return to the oven.
Bake for another 18-20 minutes, flipping the burgers halfway, until the fries and crisp and the burgers are cooked through.
Serve the burger and fries as a bowl, or a traditinoal burger and fries with a bun!