Cook couscous according to package instructions.

Cook chicken in a skillet over medium heat until both sides are browned and cooked through.

Dice tomato, cucumber, and red onion. Mix with lemon juice, olive oil, Italian seasoning, salt, and pepper.

Assemble bowls with couscous, sliced chicken, salad, and a scoop of tzatziki.

Sprinkle crumbled feta cheese over the top and serve.