Preheat your oven to 425°F (220°C). Wash and dice sweet potatoes into uniform pieces.
Toss diced sweet potatoes with avocado oil, season salt, dried parsley, black pepper, and parmesan cheese. Spread on a baking sheet and roast for 25-30 minutes until tender.
In a skillet over medium heat, cook lean ground beef until browned, breaking it apart as it cooks for about 7-10 minutes.
Drain excess fat if necessary, then add ketchup, water, sugar, mustard, white vinegar, paprika, kosher salt, and black pepper to the beef. Stir and let simmer for 5-10 minutes.
Assemble bowls starting with roasted sweet potatoes, followed by sloppy joe mixture on top.
Top with sliced dill pickles, pickled red onions, sliced jalapeños, and chives or green onions.