Is a human omnivore diet [vegetable/fruit and meat] a biblical concept?

Is a human omnivore diet [vegetable/fruit and meat] a biblical concept? We often read  the Genesis creation story that we are told in [KJV] Chapter 1, verses 29 - 30 

"And God said, “See, I have given you every herb that yields seed which is on the face of all the earth, and every tree whose fruit yields seed; to you it shall be for food. And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so."

Well, that's fine for the counted-days of creation, and these verses occur as part of the sixth day, but then there was a seventh day; God removed his hat and rested, but putt the hat back on for an eighth, and so on uncounted days, continuing creation, and, I interpret, instituted a concept that endures to this day; the Darwinian process called natural selection, or evolution; where changes in form and function began to occur. Thus, we encounter, in Genesis 9: 3 [KJV], the following:

"Every moving thing that liveth shall be meat for you; even as the green herb have I given you all things."

You note, we are still in Eden. God is still revealing things to Adam & Eve.

If "every moving thing that liveth" was added to the human diet, why, then, later, was diet restricted as recorded in Leviticus 11 [KJV]  [I'll not quote - go read the chapter.] And yet later, in the NT, Peter has a dream that effectively dispenses with the dietary Law of Moses [Acts 10: 11-16 - including v. 15: "And the voice [of an unseen angel] spake unto him again the second time, What God hath cleansed, that call not thou common" or, as might be interpretred, "unclean."

Dietary law may be considered not as a strict cleanliness issue of one sort or another of available foods, but of a means to judge our acceptance of obedience to whatever law is given from God, which is why, in our day, my own religious faith [LDS] has certain restrictions of consumption such as liquor, and smoking. Personally, I add soda but on very rare occasion, and only occasional red meat, preferring fish, chicken, and pork loin.

I am confused which side of the debate you are on.

I only eat chocolate. 80% of my calories come from candy.

One of the more interesting scholarly theories (to me, anyway) is that Genesis 1 and 2 are separate creation stories that were eventually put together and read as one. They base this in part on the numerous conflicts between the two.

In Gen 1, God makes humankind male and female to begin with; there is no making man and then realizing he erred in not providing a companion. In Gen 1 he creates the world, the animals and plants, and tells humans to be fruitful and multiply, as if he made Earth and then immediately set humans at large within it, without an initial paddocking in Eden.

Then Gen 2 comes along, and excepting its first paragraph, which may have been a later addition to provide some continuity, it can be read as a completely separate narrative. We start all over. The plants have not yet been made, the animals have not yet been made, and God begins our race with just the human male form. The animals and birds he makes only because he realizes Adam is alone and doesn't want him to be. Ditto for the female form.

So in Gen 1 I get the vibe that he intended the Darwinian natural order to begin with. But in Gen 2 I get the impression that he intended Eden to be idyllic, with Adam and Eve described as eating only fruits and things, and the brutality of nature came later.

I'm not sure what you're trying to say but human beings were kind of obligated to be omnivores. It has nothing to do with the bible.

According to some scientists, our teeth correspond to a vegetarian species. So we're vegetarians by nature. That's why we cook the meat.