Quick answer
Greed is in a hurry and cannot see ahead. The verse pairs an appetite with a blind spot.
Read both lines
"Evil eye" is a Hebrew idiom for stinginess and grasping, the opposite of the "generous eye" the book blesses at 22:9, so the phrase describes a settled disposition rather than a look. The verse then attaches haste to it, picking up verse 20's contrast two lines later.
What the second line adds is the specific failure: he does not consider. Not that he weighs the risk and accepts it, but that the calculation never happens, because the appetite is doing the looking. That is the verse's insight about greed. It is not a bad bet, it is a state in which the bet is never examined, and the poverty arrives from a direction he had no reason to watch.
Related: Proverbs 22:9 · Proverbs 28:20 · Proverbs 21:5 · Proverbs 23:4–5
New King James Version®, Copyright © 1982, Thomas Nelson. All rights reserved. Full copyright information. Scripture provided by API.Bible.
Go Deeper
If this verse has been used to put weight on you that it was never carrying, ask about it directly.