Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Dice the Yukon Gold potato into uniform 1/2-inch cubes to ensure even cooking.
In a medium bowl, toss the potato cubes with half of the olive oil, half of the sea salt, and half of the black pepper.
Spread the potatoes in a single layer on the prepared baking sheet and roast for 15 minutes.
While the potatoes are roasting, cut the chicken breast into bite-sized pieces and slice the bell peppers into thin strips.
In the same bowl used for the potatoes, toss the chicken and peppers with the remaining olive oil, chipotle powder, garlic powder, salt, and pepper.
Remove the baking sheet from the oven, move the potatoes to one side, and add the chicken and pepper mixture to the other side.
Return the pan to the oven and roast for an additional 15 to 18 minutes until the chicken is cooked through and the potatoes are perfectly golden and crisp.
Serve immediately, garnishing with fresh cilantro or a squeeze of lime if desired.