Grilled Chicken and California Avocado Sandwich

Ingredients

• ¼ cup ponzu sauce
• 1 tablespoon brown sugar
• 1 tablespoon sesame oil
• 1 tablespoon fish sauce
• 1 garlic clove, grated
• Zest of 1 lemon, divided
• 3 boneless, skinless chicken thighs
• ⅓ cup mayonnaise
• 2 tablespoons finely chopped scallions
• Juice of ½ lemon
• Kosher salt and freshly ground black pepper
• Vegetable oil
• 4 slices bread, toasted if desired
• 2 ripe, fresh California Avocados —pitted, peeled and thinly sliced
• 1 cup pea shoots or other microgreens