Heat olive oil in an extra-large skillet or Dutch oven over medium heat.
Add the sweet peppers, eggplant, onion, and celery.
Cook for 10 to 15 minutes, stirring occasionally, until the vegetables are tender.
Add the minced garlic and cook for 1 more minute until fragrant.
Pour in the chopped tomatoes and tomato juice.
Add the drained chickpeas, dried thyme (if using), and crushed red pepper.
Stir to combine, then cover and simmer for 5 to 10 minutes, allowing the flavors to meld.
Uncover and stir in the fresh thyme (if using), salt, and black pepper.
Serve immediately, garnished with extra fresh thyme if you like.