Preheat your oven to 425°F.
Pat the chicken breast dry and season it lightly with salt, pepper, and garlic powder.
Coat both sides of the chicken breast evenly in almond flour.
Place the coated chicken breast on a baking sheet lined with parchment paper and bake for 18-20 minutes or until the chicken reaches an internal temperature of 165°F. For extra crispiness, flip halfway through the baking process.
While the chicken is baking, cut the bell pepper into strips, toss with a little olive oil, salt, and pepper, then roast on a separate baking sheet in the oven for about 12-15 minutes until tender and slightly charred.
In a small saucepan, combine the pineapple juice, rice vinegar, honey, and soy sauce. Heat over medium-low heat and stir in the cornstarch mixed with water to create a slurry. Continue stirring until the sauce thickens slightly, about 3-5 minutes.
Once the chicken is done, remove it from the oven and drizzle the warm sweet and sour sauce over it. Top with roasted bell pepper strips.
Serve immediately and enjoy your balanced, flavor-packed meal.