Preheat oven to 375 degrees F. Line a baking sheet with parchment paper or a silicone baking mat; set aside.
To make the honey mustard, whisk together mayonnaise, Greek yogurt, honey and mustards.
To make the pecan crust, combine pecans, Panko, Italian seasoning, garlic powder and onion powder in the bowl of a food processor until mixture resembles coarse crumbs.
Season chicken with salt and pepper, to taste. Working one at a time, dip chicken into honey mustard, then dredge in pecan mixture, pressing to coat.
Place chicken onto the prepared baking sheet and bake for 15-20 minutes, or until the crust is golden brown and the chicken is completely cooked through.
Serve immediately, garnished with parsley, if desired.
Notes
*Panko is a Japanese-style breadcrumb and can be found in the Asian section of your local grocery store.