Preheat oven to 220 °C or 200 °C fan bake. Line 1-2 oven trays with baking paper.
Cook veggies
Wash and dice the unpeeled 400 g potatoes and 400 g sweet potatoes into 2cm cubes. Cut 2 carrot in half lengthways and then slice. Slice 1 capsicum into bite-sized chunks. Toss on the prepared oven tray with 1 tbsp olive oil. Season with salt and pepper and roast on lower oven rack for 20-25 minutes, until golden and tender.
Cook chicken
Pat 400 g chicken thighs dry. Toss in a bowl with ¼ cup Southern style seasoning. Season with salt and pepper and spray withoil spray. Place it on the remaining prepared oven tray and cook it in the oven when the veggies have 15 minutes of cooking time remaining.Tip: Rotate the trays halfway through for even cooking.
To finish
Toss 1 cup spinach and 1 tbsp balsamic vinegar through the veggies once cooked. Slice the chicken.
To serve
Divide the roasted veggies between plates and top with the Southern style chicken. Serve your favourite sauce on the side for dipping.