Slice the chicken breast into thin strips for even cooking and faster searing.
In a small bowl, combine the almond flour, dried oregano, garlic powder, sea salt, black pepper, and lemon zest to create the crust mixture.
Press each chicken strip firmly into the herb mixture until lightly and evenly coated on all sides.
Heat the olive oil in a large non-stick skillet over medium-high heat and sear the chicken for 4-5 minutes per side until golden brown and cooked through.
While the chicken cooks, whisk together the Greek yogurt, Dijon mustard, lemon juice, and nutritional yeast in a large bowl until the dressing is smooth.
Add the chopped romaine lettuce to the dressing bowl and toss thoroughly to ensure every leaf is well-coated.
Slice the avocado and arrange it over the dressed greens along with the hot, crispy chicken strips.
Garnish the salad with shaved parmesan cheese and serve immediately while the chicken is warm.