I’d say God is all over the map on dietary policy.
In “the beginning” we have God’s ideal ecosystem, Eden, where only plants are mentioned as food sources: “Of every tree of the garden thou mayest freely eat…”
After the “fall”, the ground becomes “cursed”, which apparently means that instead of just being able to go out and pick their dinner, humans had to “till the soil” and work for it. We’ve also got Able represented as a “keeper of sheep”, though it’s not said what the sheep are kept for (milk? wool? meat?).
After the flood we have the first explicit permission for animals to be used as food (Genesis 9:3): “Every moving thing that liveth shall be meat for you; even as the green herb have I given you all things.”
But later, in the Mosaic law, God backtracks on the “every moving thing” provision by ruling out much of the animal kingdom as food.
By the time we get to the Christian era, we have the apostles throwing the kitchen open to everything but blood, strangled animals, and things sacrificed to idols (Acts 15:28,29): “It seemed good to the Holy Spirit and to us not to burden you with anything beyond the following requirements: You are to abstain from food sacrificed to idols, from blood, from the meat of strangled animals and from sexual immorality”
A short time later, Paul in effect even removes those restrictions, saying to go ahead and eat anything you find in the butcher shop (1 Cor 10:25): “Eat anything sold in the meat market without raising questions of conscience, for, “The earth is the Lord’s, and everything in it.”, and saying that the whole “abstain from things sacrificed from idols” thing is just for those who are not free: “We know that an idol is nothing at all in the world and that there is no God but one…But not everyone knows this. Some people are still so accustomed to idols that when they eat such food they think of it as having been sacrificed to an idol, and since their conscience is weak, it is defiled. But food does not bring us near to God; we are no worse if we do not eat, and no better if we do.”
(A personal disclaimer: I’m not a Christian and so I don’t feel in the least bit obliged to use the Bible as a a dietary guide. I find its advice on diet about as useful as its council on slavery and capital punishment)