In a medium bowl, combine cooked chicken, mango chutney, curry powder, Greek yogurt, and lemon juice. Stir until evenly coated and set aside for 10 minutes.

Select your preferred bread type and slice it horizontally.

Spread a layer of the chicken filling on the bottom slice, then add fresh greens.

Place the top slice on each sandwich and press down gently.

Serve the sandwiches on a platter with additional greens for garnish.

Wrap any leftovers tightly and refrigerate for up to 2 days.