Chicken fajita bowls

Ingredients

• 600g skinless and boneless chicken breasts, cut into strips
• 2 large red peppers, deseeded and thinly sliced
• 2 large red onions, each cut into 8 wedges
• 260g baby corn, halved lengthways
• 2 tsp smoked paprika
• 2 tsp ground cumin
• 2 tsp dried oregano
• Low-calorie cooking spray
• 400g can black beans, drained and rinsed
• 400g can red kidney beans, drained and rinsed
• 1 romaine lettuce, shredded
• 4 tbsp fat-free natural Greek yogurt, to serve