Pat the chicken breast dry with a paper towel to ensure a golden-brown crust and season both sides evenly with dried oregano, garlic powder, sea salt, and black pepper.
Slice the baby potatoes into halves and trim the woody ends off the asparagus, cutting them into two-inch pieces.
Heat 0.25 tablespoon of olive oil in a large skillet over medium heat, add the potatoes, and cook for 8 to 10 minutes until they are tender and golden.
Remove the potatoes from the skillet and set aside, then increase the heat to medium-high and add the remaining 0.5 tablespoon of olive oil.
Place the chicken in the skillet and sear for 5 to 6 minutes per side until the exterior is crispy and the internal temperature reaches 165 degrees Fahrenheit.
During the final 4 minutes of cooking the chicken, add the asparagus and cherry tomatoes to the pan, stirring occasionally until the tomatoes begin to blister.
Turn off the heat and return the potatoes to the pan, then drizzle everything with fresh lemon juice.
Garnish the dish with chopped fresh parsley before serving warm.