For the second time this year, investors were applauding strong quarterly earnings results from Chewy (NYSE: CHWY) , sending the online pet products retailer's shares higher.

Elsewhere, the stock gained added attention when it was learned that Keith Gill, aka Roaring Kitty on the Wallstreetbets message boards of Reddit, had made an investment. Gill helped spur the meme-stock craze a few years ago.

Let's take a closer look at Chewy's recent results and see if the uptick in investor enthusiasm this year is warranted.

Pet owners are spending more on their pets

For its fiscal second quarter that ended in July, Chewy saw its sales rise 3% year over year to $2.86 billion. Autoship sales climbed nearly 6% to $2.24 billion and were 78% of its total revenue.

Net sales per active customer (NSPAC), meanwhile, jumped over 6% year over year to $565. This was the second straight quarter of strong NSPAC growth, showing that pet owners are now spending more on their pets. The company also saw mobile orders climb 15% after it revamped its app.

Gross margin improved 120 basis points to 29.5%. Meanwhile, the company said it was seeing selling, general, and administrative expenses (SG&A) leverage, as 40% of its order volume is now benefiting from automation.

The gross-margin improvement led to strong increases in profitability metrics, with adjusted earnings before interest, taxes, depreciation, and amortization (EBITDA) surging 64% year overyear to $144.8 million. Adjusted earnings per share (EPS) soared 60% to $0.24. Chewy generated $91 million in free cash flow in the quarter. It ended the period with $695 million in cash and marketable securities and no debt.

During the quarter, the company bought back $500 million worth of shares from its largest shareholder, BC Partners.

The company opened two vet clinics in the quarter, bringing the total to six. It said the clinics are serving as a strong customer-acquisition funnel, as well as helping lead to more pharmacy-related sales.

Looking ahead, company management forecast revenue growth to start accelerating. For Q3, it projected sales between $2.84 billion and $2.86 billion, representing 3% to 4% growth. It maintained its full-year guidance for sales to rise by 4% to 6%, or $11.6 billion to $11.8 billion. This indicates that management expects revenue to continue to accelerate in Q4, although it will be helped by an extra week in the period.

Chewy also increased its full-year adjusted EBITDA margin guidance to a range of 4.5% to 4.7%, up from a prior view of 4.1% to 4.3% and an original outlook of 3.8%.

Is now a good time to buy Chewy stock?

Chewy stock currently trades at a forward price-to-earnings (P/E) ratio of around 26 based on next year's analyst estimates, which on the surface does not appear cheap for an e-commerce company expected to grow its sales between 4% to 6% this year.

However, there are a few things to consider. The first is that much of the company's revenue comes from autoship customers and is highly recurring in nature. These types of businesses that cater to basic necessities trade at premium valuations given their resilient nature, and Chewy's valuation is in line with retailers such as Walmart and Tractor Supply .

However, unlike those retailers, Chewy is seeing an inflection in its earnings growth, with profitability metrics growing exponentially higher than its sales.

Third, revenue growth is expected to accelerate moving forward. There are clear signs that people are spending more on their pets, which is reflected in the strong sales-per-active-customer growth it has seen each of the first two quarters this year. Its full-year guidance indicates the expectation of very solid sales growth through the rest of this year.

In the long term, the company has a great opportunity to cross-sell its 20 million customers to its pet pharmacy business. This is a higher-margin business, and growth in this area would continue to improve gross margins and profitability.

Given that, I think investors can still look to buy Chewy stock for the long term.

Before you buy stock in Chewy, consider this: