whole chicken breasts, boned, skinned, split
salt and freshly ground pepper to taste
Preheat oven to 350 degrees.
Lightly grease 1 or 2 large baking sheets.
Sprinkle chicken lightly with salt and pepper.
Stir together yogurt and mustard in a small bowl.
Spread mixture on bottom sides of chicken.
Place on baking sheets, coated side down, leaving space between pieces.
Spread mixture over top.
Combine bread crumbs, thyme, 1/2 teaspoon salt and 1/4 teaspoon pepper.
Bake for 30 to 35 minutes until golden-brown and no longer pink in the center.