-Preheat oven to 425 degrees.
-Add flour to one bowl, eggs to another, and bread crumbs to the third bowl.
-Season the flour and the bread crumbs with salt and pepper and toss to mix.
-Cut chicken tenders into bite sized pieces.
-Lightly coat chicken pieces with flour shaking to remove excess and then dip into egg to coat, then dip into the bread crumbs and coat evenly.
-Place chicken onto a cooling rack on a baking sheet (this helps all sides of chicken to cook evenly)and spray with avocado oil spray lightly to coat top of chicken.
-Bake for 20-25 minutes until golden brown. -If needed for crispness, switch the oven to broil the last 2 minutes to get extra crispy nuggets. -While nuggets are cooking, add all sauce ingredients into asaucepan and cook over medium heat until thick and bubbly.
-Using an immersion blender or regular blender, puree the sauce.
-Strain if desired to remove blackberry seeds.
-Serve nuggets alongside sauce.