Prep all your ingredients: chop zucchini, red bell peppers, and red onion into bite-sized pieces, halve cherry tomatoes, and cut chicken into cubes.

Heat olive oil in a large skillet over medium-high heat, add chicken, season with salt and pepper, and sauté for 5–7 minutes until cooked through.

In the same skillet, sauté chopped red onion and minced garlic for 1-2 minutes, then add zucchini and red bell peppers and cook for an additional 4-5 minutes.

Return the cooked chicken to the skillet and stir well to combine all ingredients.

Drizzle lemon juice, fold in feta cheese and olives. Heat through for an additional minute and serve.