If you receive form 1095-A, this means that you are eligible for the ACA Premium Tax credit and may have received an advance of that credit. You have to report form 1095-A on your tax return.
As you are eligible for the Premium Tax credit, you cannot use form 1040EZ. Form 1040EZ only allows the Earned Income Tax credit.
Please read this TurboTax article for more information:
https://turbotax.intuit.com/tax-tips/irs-tax-return/what-is-the-irs-1040ez-form/L3KwQs5iR
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