Preheat oven to 425 F. Spray a baking sheet with some cooking spray.
In a bowl mix the spices, with the oil and toss the sweet potatoes in it.
Spread on the sheet pan and put in oven for 15 -20 minutes on the medium rack.
Place the meatballs in the hot pan and cook for 15- 20 minutes turning them over halfway to get a nice crisp on both sides. Usually I cook the meatballs to 170F internal temperature.
Once the meatballs are done, reduce the heat to low, add the lemon juice and some water to deglaze the pan. Mix it well and take it off the heat.