Pat the chicken breast dry with a paper towel to ensure a crispy sear.
In a small bowl, combine the smoked paprika, garlic powder, sea salt, and black pepper.
Rub the spice mixture evenly over both sides of the chicken breast.
Heat the avocado oil in a cast-iron skillet over medium-high heat.
Place the chicken in the skillet and cook for 5-7 minutes per side until a golden crust forms and the internal temperature reaches 165°F.
While the chicken rests, toss the mixed baby greens, halved cherry tomatoes, and sliced cucumber in a large bowl.
Whisk together the lemon juice and extra virgin olive oil, then drizzle over the salad base.
Slice the cooked chicken and the avocado, then arrange them over the greens and serve immediately.