Chimichurri Burst Avocado Chicken Salad

Ingredients

• 1/2 red onion, sliced
• 1 teaspoon olive oil
• 1/2 cup fresh parsley leaves, to garnish
• 4 skinless chicken thighs, no bone
• 5 cups Romaine lettuce leaves, washed and dried
• 2 ripe avocados, sliced
• 3 ripe tomatoes, sliced
• 1 cup store-bought Chimichurri Sauce