Pineapple & Chicken Stir Fry - A better choice!

Ingredients

• 2 tbsp olive oil
• 700g chicken breasts, diced
• 1 small red onion, diced
• 1 red capsicum, diced
• 1 yellow capsicum, diced
• 1 small head broccoli, chopped into small florets
• 500g fresh pineapple, diced
• Sesame seeds, to garnish
• ¼ cup pineapple juice
• ¼ cup rice wine vinegar
• 1/3 cup soy sauce
• 1 ½ tsp sesame oil
• 2 tbsp cornflour