Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
Slice the russet potato into thin, even wedges and pat them thoroughly dry with a paper towel to ensure they get extra crispy.
In a bowl, toss the potato wedges with half of the olive oil, garlic powder, dried rosemary, sea salt, and black pepper.
Arrange the potatoes in a single layer on the baking sheet and roast for 25 to 30 minutes, flipping halfway through, until golden brown.
While the fries roast, season the chicken breast with the remaining olive oil, salt, pepper, and lemon juice.
Heat a grill pan or skillet over medium-high heat and cook the chicken for 6 to 7 minutes per side until the internal temperature reaches 165°F.
Slice the succulent chicken into strips and serve alongside the hot garlic herb fries, garnished with fresh chopped parsley.