Begin by washing and chopping your fresh vegetables into bite-sized pieces: slice the zucchinis, dice the bell peppers, and chop the onion. Cut the chicken breasts into similar-sized pieces for even cooking. Gather your garlic cloves, and have your lemon juice and feta ready. Having everything prepped will streamline the cooking process, letting you focus on creating this delicious Mediterranean Chicken Stir Fry.

In a large skillet, heat 2 tablespoons of extra virgin olive oil over medium-high heat. Once shimmering, season the chicken pieces with salt and pepper, and add them to the skillet. Sauté the chicken for 5 to 7 minutes, stirring occasionally, until golden brown and cooked through—look for no pink inside. Remove the chicken from the skillet and set it aside for later.

In the same skillet, add the remaining tablespoon of olive oil, then toss in the chopped red onion and minced garlic. Sauté for about 1 to 2 minutes, watching for a fragrant aroma and slight softening of the onions. Next, add the sliced zucchinis and bell peppers, stirring frequently for 4 to 5 minutes, until they are tender yet still vibrant—this will infuse your Mediterranean Chicken Stir Fry with color and flavor.

Return the cooked chicken to the skillet with the sautéed vegetables. Toss everything together to combine evenly, allowing the flavors to meld for about a minute. Make sure the chicken is warmed through and well-mixed with the vegetables, creating a vibrant blend that showcases the essence of your Mediterranean Chicken Stir Fry.

Drizzle the entire mixture with fresh lemon juice, stirring to incorporate the bright acidity. Gently fold in the crumbled feta cheese, allowing it to melt slightly into the warm stir fry. Heat everything through for an additional minute, ensuring every bite bursts with Mediterranean flavor before serving this delightful dish.