Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Dice the potato into 1/2-inch cubes and finely mince the garlic, rosemary, and thyme.
In a mixing bowl, toss the potato cubes with half of the olive oil, half of the minced herbs, and a pinch of the salt and pepper.
Spread the potatoes onto the prepared baking sheet and roast for 12 minutes to get a head start on crisping.
While potatoes roast, rub the chicken breast with the remaining olive oil, herbs, garlic, and a squeeze of the lemon juice.
Remove the sheet pan from the oven, move the potatoes to one side, and place the chicken and asparagus on the other side.
Return the pan to the oven and roast for an additional 15 to 18 minutes until the chicken reaches an internal temperature of 165°F.
Squeeze the remaining lemon over the entire dish and serve while warm and fragrant.