In a shallow bowl, whisk together the almond flour, arrowroot starch, 0.5 tsp garlic powder, onion powder, smoked paprika, 0.25 tsp sea salt, and black pepper.
Slice the chicken breast into thin strips and dredge each piece thoroughly in the flour mixture, pressing firmly to ensure the coating adheres.
Heat the avocado oil in a large skillet over medium-high heat until it begins to shimmer.
Place the chicken strips in the hot skillet and cook for 4 to 5 minutes per side until the crust is golden brown and the chicken is cooked through.
While the chicken is frying, whisk together the Greek yogurt, lemon juice, dried dill, remaining 0.25 tsp garlic powder, and remaining 0.25 tsp sea salt in a small bowl until smooth.
Arrange the mixed greens, sliced cucumber, and halved cherry tomatoes in a large serving bowl.
Top the fresh salad with the hot crispy chicken strips and drizzle generously with the zesty ranch dressing before serving.