Punchy jerk sweet potato nachos

Name: Punchy jerk sweet potato nachos
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American, Latin American
Ingredients: 4 sweet potato (medium in size, cut into 0.5cm slices ); 2 tbsp olive oil; 0.5 Red chilli (finely chopped); 1 mango (peeled, and finely chopped); 2 lime; 0.5 pack Coriander (roughly chopped ); 400 g kidney beans (from a can, drained); 1 garlic (finely chopped); 100 ml sour cream; 1 avocado (finely sliced); salt; 100 g Barbecue Sauce (Jerk Style Barbecue Sauce)