Place the chicken breast between two sheets of parchment paper and pound with a meat mallet until it is an even 1/2-inch thickness.
In a shallow bowl, whisk the egg white until slightly frothy.
In a separate shallow dish, combine the almond flour, parmesan cheese, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg white, letting any excess drip off, then dredge it through the almond flour mixture until evenly coated.
Heat the avocado oil in a non-stick skillet over medium heat. Once hot, add the chicken and cook for 4-5 minutes per side until golden brown and cooked through.
While the chicken cooks, halve the cherry tomatoes, dice the cucumber, and finely mince the red onion.
In a small bowl, whisk together the extra virgin olive oil, lemon juice, and chopped fresh parsley.
Toss the tomatoes, cucumber, and onion with the dressing.
Slice the crispy chicken cutlet and serve immediately alongside the zesty tomato salad.