Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel and cube the sweet potato, then place in a pot of boiling water and cook until tender, about 12 minutes.
Pat the chicken breast dry with a paper towel and lightly brush the surface with olive oil.
In a shallow bowl, mix the almond flour with a pinch of sea salt, black pepper, and garlic powder.
Press the chicken breast into the almond flour mixture until evenly coated on both sides.
Place the chicken on the baking sheet and bake for 18 to 22 minutes until the crust is golden and the chicken is cooked through.
While the chicken bakes, steam the green beans in a steamer basket over boiling water for 5 to 7 minutes until bright green.
Drain the sweet potatoes and mash them thoroughly with a fork, adding a splash of the cooking water if needed for a creamy consistency.
Serve the crispy chicken alongside the sweet potato mash and steamed green beans.