Just to add a few thoughts:
Obey God and leave the consequences and performances to Him
We were not told Elijah complained, either of the mode of delivery or the quantity of food by the ravens. Can we compare that with Apostle Peter who rejected unclean food in a vision
We were not told that Elijah complained of the monotony of the food as the Israelites did to manna in the wilderness.
May God help us to rely solely on Him!