Preheat oven to 200°C (400°F). Line baking sheet with parchment or grease with olive oil spray.
Mix mayonnaise, Greek yoghurt, garlic, lemon juice, parsley, chives, salt, and pepper in a medium bowl.
In another bowl, combine panko breadcrumbs with garlic powder, paprika, salt, and pepper.
Dip each chicken tender in the mayo mix, then coat in breadcrumb mixture on all sides.
Place tenders on baking sheet and bake for 25–30 minutes, flipping halfway through.
While baking, melt butter and mix in garlic and parsley. Brush over tenders after baking.
Let tenders rest, sprinkle with parmesan, and serve with lettuce salad, fries, and lemon wedges.
Notes
Reheat leftovers in the oven or toaster oven to maintain crispiness. Store in an airtight container in the fridge up to 4 days or freeze up to 2 months.