Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Scrub the russet potato and dice it into 1/2-inch cubes for maximum surface area and crunch.
In a bowl, toss the potato cubes with half of the olive oil, sea salt, and black pepper.
Spread the potatoes in a single layer on the baking sheet and roast for 20-25 minutes, flipping halfway through, until they are golden and crispy.
While the potatoes roast, slice the chicken breast into thin strips and the red bell pepper into slices.
In a small bowl, combine the chipotle powder, smoked paprika, and garlic powder, then rub the mixture evenly over the chicken strips.
Heat the remaining olive oil in a large skillet over medium-high heat.
Add the chicken and bell peppers to the skillet and sauté for 6-8 minutes, stirring occasionally, until the chicken is cooked through and the peppers are tender-crisp.
Remove from heat and serve the spicy chicken and peppers alongside the crispy roasted potatoes.
Garnish with freshly chopped cilantro before serving.