Step 1To make the marinade, juice the lime and place in a small bowl together with the spices (chile powder, cumin, salt and pepper) and olive oil. Whisk to combine — the mixture will thicken.
Step 2Peel and slice the onion and slice the bell peppers. Mince the garlic. You can use one green bell pepper plus three other bell peppers (red, yellow and/or orange).