Bake chicken nuggets at 400 degrees for 11 - 13 minutes.
Meanwhile, heat olive oil over medium high heat in a deep skillet. Add frozen vegetables. Cover and cook 5-7 minutes until tender, stirring occasionally.
Once nuggets are done, slice in half and add to cooked vegetables in skillet.
Stir in sweet & sour sauce and green onions. Lower heat to simmer, cover, and cook an additional 5 minutes. Serve over brown rice.