Chicken Ratatouille

Details

Ingredients

• 2 tablespoons olive oil, or as needed
• 3 (10 ounce) chicken breasts, cubed, or more to taste
• ¼ cup thinly sliced red onion
• 1 yellow squash, cut in half lengthwise and into 1/4-inch slices
• 1 green zucchini, cut in half lengthwise and into 1/4-inch slices
• 1 red bell pepper, sliced in 1/4-inch strips and halved
• 6 brown mushrooms, sliced and halved, or to taste
• 3 cloves garlic, or more to taste, minced
• 1 cup chicken stock
• 1 (6 ounce) can tomato paste
• 1 tablespoon herbes de Provence
• 2 teaspoons ground cumin
• 2 teaspoons dried oregano
• 2 teaspoons celery salt
• salt and ground black pepper to taste