Whisk lime juice, parsley, olive oil, water, garlic, chilli flakes, cumin, salt and parsley together to combine. Add the honey (or orange juice if substituting for whole30 option) and whisk again until the honey runs smooth through the rest of the ingredients. Divide. Set aside 1/2 of mixture to apply when tray comes out of oven. Arrange the salmon fillets, peppers and onion in a single layer on the prepared baking tray; and apply using basting brush. Coating evenly.