Preheat your oven to 180-200°C (356-392°F).
Slice the onion and peppers into strips.
Cut the top off the garlic bulb to expose the individual cloves, but leave the bulb intact.
In an oven-safe dish, combine the chickpeas, sliced onion, peppers, tomato paste, paprika paste, olive oil, red pepper flakes, cumin, and salt.
Mix everything thoroughly to ensure the chickpeas and vegetables are well coated with the spices and sauces.
Place the half bulb of garlic, cut side up, into the center of the tray with the chickpea mixture surrounding it and top with a bit of olive oil.
Cover the dish with wet parchment paper to prevent it from drying out.
Place in the preheated oven and bake for 30-40 minutes.
After baking, carefully remove the garlic bulb. Squeeze the soft garlic cloves out of their skins and mix them back into the chickpea and pepper mixture.
Remove from the oven and let it cool slightly.
Serve warm, either as a main dish or a hearty side.
