Prep the chicken: Pat the chicken dry. Toss with the egg, coconut aminos, and a pinch of salt.
Let it sit while you mix the coating.
Mix the coating: Combine almond flour, Parmesan, garlic powder, paprika, salt, and pepper in a shallow bowl. Dredge each chicken piece, pressing gently so it adheres. Shake off excess.
Stir together the sauce base: In a small bowl, whisk orange zest, orange juice, broth, vinegar, coconut aminos, sweetener, sesame oil, garlic, ginger, and red pepper flakes.
Taste and adjust sweetness and saltiness now.
Pan-fry the chicken: Heat avocado oil in a large skillet over medium to medium-high. Add chicken in a single layer. Cook 3–4 minutes per side until golden and cooked through.
Work in batches to avoid crowding. Transfer to a plate.
Reduce the sauce: Lower the heat to medium. Pour the sauce into the same skillet and simmer 2–3 minutes, scraping up browned bits.
Sprinkle in a scant 1/4 teaspoon xanthan gum while whisking constantly to avoid clumps.
Thicken to glossy: Simmer 1–2 more minutes until the sauce turns shiny and coats the spoon. If too thin, add a tiny pinch more xanthan. If too thick, loosen with a splash of broth.
Combine and coat: Return the chicken to the skillet.
Toss until every piece is lacquered. Cook 1 minute to marry flavors.
Finish and serve: Sprinkle with sesame seeds and green onions. Serve hot over cauliflower rice or beside sautéed broccoli.