In a food processor, pulse pecans, rosemary, and dried spices until they are a finely ground texture. Be careful not to over pulse (see photo for guidance on texture) Set pecan mixture aside in a bowl.
In a separate bowl whisk together egg and milk.
Take chicken breasts + coat in egg mixture, then immediately coat in pecan crust mixture.
Place chicken on parchment paper
Bake at 400 for 30 minutes, flipping at the 15 minute mark
Video
Notes
Substitutions for this recipe:
Nuts: You can sub walnuts or cashews for pecans
Rosemary: You can omit rosemary if you prefer, or sub in thyme