Preheat your oven to 400°F and line a baking sheet with parchment paper.
Place the cornflakes in a sealed bag and crush them into coarse crumbs using a rolling pin.
In a shallow bowl, combine the crushed cornflakes with garlic powder, paprika, sea salt, and black pepper.
In a second shallow bowl, whisk the egg until smooth.
Dip the chicken breast into the whisked egg, then press it firmly into the cornflake mixture until evenly coated on all sides.
Place the coated chicken on the prepared baking sheet and lightly mist with avocado oil.
Bake for 15-18 minutes or until the chicken reaches an internal temperature of 165°F and the crust is golden brown.
While the chicken bakes, steam the green beans in a small amount of water until tender-crisp.
In a small ramekin, whisk together the honey and Dijon mustard to create the dipping sauce.
Serve the crispy chicken immediately alongside the steamed green beans and the honey mustard sauce.