Smoky Mexican BBQ Chicken Skewers with Tangy Marinade

Ingredients

• 650 g boneless chicken thighs, trimmed and cut into bite-sized pieces
• 2 garlic cloves, finely minced
• 1 jalapeño pepper, deseeded and chopped
• 3 tablespoons tomato paste
• 2 teaspoons ground cumin
• 2 teaspoons paprika
• 1/2 teaspoon dried oregano
• Handful fresh coriander leaves, chopped
• Juice of half a lime
• Salt, to taste
• Freshly ground black pepper, to taste
• 1 red bell pepper, cut into 2 cm squares
• 1 green bell pepper, cut into 2 cm squares
• 1 yellow bell pepper, cut into 2 cm squares
• 1 white onion, cut into 2 cm squares
• Cooking oil spray