Spanish Style Smoked Paprika Chicken

Name: Spanish Style Smoked Paprika Chicken
Cuisine: European, Mediterranean, Spanish
Ingredients: 1 tablespoon olive oil; 1 large onion; 1 red pepper; 1 green pepper; Around 3-5 cloves garlic ((dependant on personal preference)); 500g (17½ oz) passata or tinned tomatoes; 1 tablespoon tomato puree; 600-700ml (2½-2¾ cups) stock; Sea salt & pepper ((to taste)); 1 tablespoon smoked paprika; 1 teaspoon dried rosemary; ½ teaspoon dried thyme; 500-600g (20 oz) boneless chicken breast ((chopped into chunks))