Before starting, wash and dry all produce. Cut cucumber into 1/4-inch rounds. Cut tomato into 1/2-inch pieces. Drain, then roughly chop olives.

Pat chicken dry with paper towels. Add chicken, garlic salt, 1/2 tbsp oil (dbl for 4 ppl) and half the Mediterranean Spice Blend (use all for 4 ppl) to a medium bowl. Toss to coat. Set aside.

Add mayo, vinegar, 1/4 tsp sugar (dbl for 4 ppl) and half the feta to a large bowl. Season with salt and pepper, then whisk to combine. Set aside.

Heat a large non-stick pan over medium-high heat. When hot, add 1/2 tbsp oil (dbl for 4 ppl), then chicken. Cook, flipping occasionally, until cooked through, 4-5 min.**

Add spinach, cucumbers and tomatoes to the large bowl with dressing. Toss to combine.

Divide salad between plates. Top with chicken, olives and remaining feta.