Chicken Primavera with Zucchini and Mozzarella

Preheat the oven to 200 °C. Prepare a baking sheet and line it with baking paper.

Slice the tomatoes, zucchini, and onion thinly and halve them. Make 5–6 lengthwise cuts into the chicken breast fillets (the cuts should be about 1.5 cm deep).

Season the meat with salt and pepper. Insert half a slice of zucchini, onion, and tomato alternately into each cut.