BBQ Chicken with Roast Spring Greens

Chicken Breast, Sweet Potato, BBQ Sauce (Glucose Syrup, Water, Tomato Puree, Molasses, Spirit Vinegar, Cornflour, Muscovado Sugar, Salt, Smoke Flavouring, Caramel e150, Red Pepper, Cloves, Cumin, Oregano, Cinnamon, Fenugreek, Potassium Sorbate E202, Onion Powder, Garlic Powder), Spring Greens, Kale, Rapeseed Oil (Rapeseed Oil, Dimethylpolysiloxane), Sea Salt (Salt, Sodium Ferrocyanide), Lemon Juice, Coriander, Wholegrain Mustard (Water, Mustard Seed (30%), White Wine Vinegar, Glucose-Fructose Syrup, Mustard Flour (4.0%), Salt, Acidity Regulator (Acetic Acid), Cinnamon, Pimento, Turmeric Powder.) (MUSTARD), Mustard (Water, MUSTARD Seeds, Spirit Vinegar, Salt, Acidity Regulator: Citric Acid) (MUSTARD), Garlic powder, Smoked Paprika, Black Pepper