Preheat your oven to 400°F and line a baking sheet with parchment paper.
Dice the red potato into small, uniform half-inch cubes to ensure even cooking.
Toss the potato cubes with half of the olive oil, sea salt, black pepper, and garlic powder.
Spread the potatoes on the baking sheet and roast for 25 minutes, flipping halfway through, until they are golden and crispy.
While the potatoes roast, whisk together the chipotle peppers in adobo and lime juice in a small bowl.
Coat the chicken breast thoroughly with the chipotle mixture and let it marinate for at least 10 minutes.
Heat the remaining olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 6 to 7 minutes per side until the internal temperature reaches 165°F.
Remove the chicken to a plate to rest, then add the sliced bell peppers to the same skillet.
Sauté the peppers for 3 to 4 minutes until they are tender-crisp and have picked up the smoky flavors from the pan.
Slice the chicken and serve it alongside the roasted potatoes and sautéed peppers.