Avocado chicken fajitas - Australian Avocados

Ingredients

• 1tsp olive oil
• 6 chicken thigh fillets, thinly sliced
• 2 red capsicums, seeded, thinly sliced
• 1 red onion, cut into wedges
• 1 pkt fajita seasoning mix
• 12 small flour tortillas
• 1 avocado, peeled, seeded, mashed
• Mixed salad leaves, to serve