Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Season the turkey breast evenly with garlic powder, half of the sea salt, and half of the black pepper.
Roast the turkey for 20-25 minutes or until the internal temperature reaches 165°F, then let it rest for 5 minutes before slicing thinly.
While the turkey cooks, remove the tough stems from the kale and tear the leaves into small, bite-sized pieces.
Place the kale in a large bowl and drizzle with 1 teaspoon of olive oil and a pinch of salt, then massage the leaves with your hands for 2-3 minutes until they become dark and tender.
In a small jar, whisk together the remaining olive oil, lemon juice, remaining salt, and remaining pepper to create the dressing.
Slice the avocado into thin wedges and arrange them over the massaged kale.
Top the salad with the warm roasted turkey slices, drizzle with the lemon vinaigrette, and toss gently to combine.