Slice the chicken breast into even strips and place them in a bowl with the buttermilk to marinate for 15 minutes.
In a shallow dish, whisk together the whole wheat flour, garlic powder, onion powder, paprika, sea salt, and black pepper.
Remove each chicken strip from the buttermilk, letting the excess drip off, then dredge thoroughly in the seasoned flour mixture.
Heat the avocado oil in a large skillet over medium-high heat until shimmering.
Place the chicken in the skillet and cook for 4-5 minutes per side until the coating is crispy and the chicken is cooked through.
While the chicken cooks, steam the broccoli florets until tender-crisp and bright green.
In a small ramekin, whisk together the Dijon mustard and raw honey until smooth.
Serve the crispy chicken alongside the steamed broccoli with the honey mustard sauce for dipping.