Heat oil in a large non-stick sauté pan over medium heat.
Once hot, add in garlic and curry paste, and cook, stirring regularly for 1 minute.
Slowly whisk in coconut milk, peanut butter, soy sauce, and brown sugar, then bring to a simmer and simmer for 3-5 minutes, or until the sauce has thickened slightly, stirring occasionally.
Stir in chickpeas, spinach, and cilantro, then cook until the chickpeas are warmed through.
Stir in peanuts and lime juice, then taste and season with salt and red pepper flakes, if desired.