Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Wash and halve the baby red potatoes, ensuring they are uniform in size for even roasting.
Pat the chicken breast dry with a paper towel and cut into 1-inch thick medallions.
In a large mixing bowl, whisk together the extra virgin olive oil, minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Add the potatoes and chicken to the bowl, tossing thoroughly until every piece is well-coated in the herb oil.
Spread the chicken and potatoes onto the baking sheet in a single layer, ensuring they are not overcrowded so they crisp properly.
Roast for 25 to 30 minutes, tossing halfway through, until the potatoes are tender and the chicken is cooked through to an internal temperature of 165°F.
Remove from the oven and drizzle with fresh lemon juice to brighten the savory herb flavors before serving.