Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Dice the yellow potato into small 1/2-inch cubes to ensure they get maximum crispiness.
Toss the potato cubes with half of the olive oil, the sea salt, and the garlic powder on the prepared baking sheet.
Roast the potatoes for 20-25 minutes, tossing halfway through, until they are golden brown and crispy.
While the potatoes roast, slice the chicken breast into thin, bite-sized strips.
In a small bowl, whisk together the chipotle peppers in adobo sauce and lime juice, then toss with the chicken strips and black pepper.
Heat the remaining olive oil in a large skillet over medium-high heat.
Add the marinated chicken and sliced bell peppers to the skillet, sautéing for 6-8 minutes until the chicken is cooked through and the peppers are tender-crisp.
Plate the spicy chicken and peppers alongside the crispy roasted potatoes and serve immediately.