Pat the chicken breast dry with a paper towel and season both sides evenly with sea salt, black pepper, dried oregano, and dried thyme.
Heat the olive oil in a large stainless steel or cast-iron skillet over medium-high heat until the oil is shimmering.
Place the chicken in the skillet and sear for 5 to 6 minutes per side until the exterior is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
While the chicken is searing, steam the green beans and halved baby potatoes in a steamer basket for 7 to 8 minutes until they are fork-tender.
Remove the chicken from the skillet and let it rest on a cutting board for 3 minutes to keep the juices intact.
Add the minced garlic, lemon juice, and lemon zest to the skillet with the remaining pan juices, stirring for 1 minute until fragrant.
Add the steamed green beans and potatoes to the skillet, tossing them in the lemon-garlic sauce for 2 minutes.
Slice the chicken into strips and serve immediately alongside the vibrant, herb-flecked vegetables.