Healthy Burrito Bowl

• 2 tbsp extra virgin olive oil
• 300 g chicken breast, cut into pieces
• 1 tsp chilli flakes
• 1 tbsp cajun spice
• 400 g tin corn kernels, drained
• 1 large tomato, chopped
• 400 g tin of black beans, drained
• 0.5 red onion, chopped
• 0.5 avocado
• .25 cup fresh coriander (cilantro) (optional)